ENGINEERING STUDIES Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 IMPORTANT INFORMATION Syllabus review Once a course syllabus has been accredited by the Curriculum Council, the implementation of that syllabus will be monitored by the syllabus committee. This committee can advise council about any need for syllabus review. Syllabus change deemed to be minor requires schools to be notified of the change at least six months before implementation. Major syllabus change requires schools to be notified 18 months before implementation. Formal processes of syllabus review and requisite reaccreditation will apply. Other sources of information The Western Australian Certificate of Education (WACE) Manual contains essential information on assessment, moderation and other procedures that need to be read in conjunction with this course. The Curriculum Council will support teachers in delivering the course by providing resources and professional development online. The council website www.curriculum.wa.edu.au provides support materials including sample programs, assessment outlines, assessment tasks, with marking keys, sample examinations with marking keys and grade descriptions with annotated student work samples. Training package support materials are developed by Registered Training Organisations (RTOs), government bodies and industry training advisory bodies to support the implementation of industry training packages. Approved support materials are listed at www.ntis.gov.au WACE providers Throughout this course booklet the term ‘school’ is intended to include both schools and other WACE providers. Currency statement This document may be subject to minor updates. Users who download and print copies of this document are responsible for checking for updates. Advice about any changes made to the document is provided through the Curriculum Council communication processes. Copyright © Curriculum Council, 2008. This document—apart from any third party copyright material contained in it—may be freely copied or communicated for non-commercial purposes by educational institutions, provided that it is not changed in any way and that the Curriculum Council is acknowledged as the copyright owner. Copying or communication for any other purpose can be done only within the terms of the Copyright Act or by permission of the Curriculum Council. Copying or communication of any third party copyright material contained in this document can be done only within the terms of the Copyright Act or by permission of the copyright owners. 2008/21927[v12] 2 Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 Rationale Engineers are problem-solvers. They design and manufacture just about anything from entertainment gadgets to sophisticated electronic systems, the tallest skyscrapers to the smallest computer chips, from cars to space shuttles, from new and emerging materials to artificial heart valves and cardiac pacemakers, from roadways to airports. Engineers rely strongly on their creativity and academic skills to turn dreams into reality by using mathematics, science and computers to model real-life situations and to find solutions. An engineer needs to be socially aware and involved in broader community issues: environment, sustainable energy, health, and consultation processes. They are responsible for the safe and efficient construction and operations of industries and infrastructure and their activities span the world economy. Their design skills determine the cost of production and the quality of products. Engineers work in project teams usually containing people who are not engineers, like scientists and technicians. The engineering project leader is responsible for communicating information between team members, understanding the underpinning science and technology, creating, testing and evaluating. Engineering Studies provides a focus on design through exciting creative, practical and relevant opportunities for students to investigate, research and present information, design and make products and undertake project development. These activities provide students with opportunities to apply engineering processes, understand underpinning scientific and mathematical principles, develop engineering technology skills and to understand the interrelationships between engineering projects and society. Engineering Studies caters for the learning needs of all students, from those seeking a career in engineering to others pursuing an avid interest in the discipline. Students can choose a course that will allow them to achieve post-school destinations into a range of disciplines including engineering, science, aviation, mechanical, fabrication and electrical trades, drafting, architecture, urban planning, business, commerce, management and other technical and technology related work and professions in engineering. The course content is sufficiently diverse to provide students with the necessary foundation to meet employment needs in a range of occupations not limited to the engineering industry. Engineering Studies is essentially a practical course focusing on real life contexts. It aims to prepare students for a future in the technological and global world by providing the foundation for life-long learning about engineering. This course provides students with the opportunity to further their achievement of specific overarching learning outcomes from the Curriculum Framework together with the development of the core-shared values. Course outcomes Engineering Studies is designed to facilitate the achievement of four outcomes. These outcomes are based on the Technology and Enterprise, Science, Mathematics and Society and Environment learning area outcomes in the Curriculum Framework. Outcomes are statements of what students should know, understand, value and be able to do as a result of the syllabus content taught. Outcome 1: Engineering process Students apply and communicate a process to design, make, and evaluate components and systems. In achieving this outcome, students: investigate design needs and opportunities in engineering; generate engineering production proposals to solutions; manage engineering production processes to produce solutions; and evaluate intentions, plans and actions. Outcome 2: Engineering understandings Students understand properties of materials, energy transfer and design principles in engineering technologies. In achieving this outcome, students: understand properties of materials and/or components in engineering technologies; understand energy transfer in engineering technologies; and understand design principles in engineering technologies. Outcome 3: Engineering technology skills Students use materials, skills and technologies appropriate to the engineering industry. In achieving this outcome, students: apply initiative and organisational skills; apply materials, techniques and technologies to achieve solutions to engineering challenges; operate equipment and resources safely; and apply skills of calculation and computation. Outcome 4: Engineering in society Students understand the interrelationships between engineering projects and society. In achieving this outcome, students: understand how engineering technologies are influenced by beliefs and values; and understand beliefs and values are influenced by engineering technologies. Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 3 Outcome progressions Each of the outcomes is described as a learning progression across six broad levels (see Appendix 1). In teaching a particular course unit, teachers can use the outcome progressions along with the unit content and contexts to: plan appropriate lessons and activities for their students, and develop specific assessment tasks and marking keys. Course content The course content is the focus of the learning program. It enables students to maximise their achievement of both the overarching learning outcomes from the Curriculum Framework and Engineering outcomes. The course content is sequential and hierarchical in nature, which increases in complexity as further units are studied. The course content is sequential i.e. for students to study higher units, they must have already studied and learnt the content from all previous units. This can include sufficient middle school programs that are mapped against the content of the units concerned. For example, a year 11 student may be able to study Stage 2 units in year 11 if he or she has been exposed to the content listed in Units 1A– 1B in their middle school year. Core content engineering design process enterprise, environment and community. Specialist engineering fields mechanical OR electronic/electrical OR systems and control. Devising Fundamental geometric 2D and 3D sketching techniques are used to show ideas, their development and synthesis and rapid visual prototyping incorporating principles of design. Producing Developing and making models, prototypes and, most importantly, complete solutions requires planning and management of the production process. The planning process involves selection of materials, sequencing operations, ordering procedures and costing arrangements, identifying occupational, health and safety issues, planning for contingencies, documenting efficient work practices. The making process involves the application of industrial simulated or standard hand, machine and process skills used in a safe and proper manner for the production of models, prototypes and complete product solutions. Free-hand and measured, scaled and accurately drafted solution workshop drawings, 2D and 3D graphics, computer generated modelling and testing are a necessary part of production. Management skills assist in the ability to manage projects. Important skills include time management skills, teamwork skills, risk management skills, and communication skills including using appropriate written and graphical communication to document project development. Evaluating Evaluation of processes, technologies and solutions using principles of design is a necessary part of engineering projects. Core content Engineering design process Principles and elements of design function cost safety aesthetics/finish demand environment ergonomics and anthropometric data designing for others demographics prototyping/modelling functional/working prototyping/modelling 4 Designing skills Investigating The design brief involves identifying and researching opportunities and analysing solutions using a range of information sources and communication types. Factors such as market forces, user needs, design solutions, historical aspects, and environmental and social factors are investigated in the design brief. Enterprise, environment and community Innovation and creativity Societal and environmental factors influence the success of innovation. The materials and technologies used impact upon the success of an innovation. Market research processes and the needs for commercial viability are also factors that stimulate innovation and creativity. Socially conscious engineering Needs versus sustainable systems contrast the shift from a traditional business model of engineering (profit-driven) with the movement to a ‘triple bottom line’ model, focusing on reporting impacts relating to economic, environmental and societal factors. Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 There are competing demands technology, industry and society. between Specialist engineering fields These laws and principles form the basis of more complex areas of electrical/electronic theory and practice. Fundamental amplification, efficiency, power, energy and related principles are governed and influenced by these laws and principles. Mechanical The content in this section is specialised knowledge that applies to mechanical engineering. It is divided into four content strands: materials statics dynamics mechanisms. An understanding of the scientific and mathematical nature and properties of materials underpins fundamental decisions concerning their selection and use in the design of engineering projects. Materials used in engineering and solid state structures are classified on the basis of their structure and properties. Plastics, wood and, most importantly, metals (ferrous, non-ferrous, pure and alloy) are materials commonly used in engineering because of their structure and properties, both static and dynamic. Systems and control The content in this section is specialised knowledge that applies to systems and control. It is divided into five content strands: nature of control systems flow charts and subroutines logic control interfacing actuators. The application of the Universal Systems diagram forms the basis for applications in systems and subsystems. Familiarity with input transducer systems and output driver and actuator systems is essential to enable systems and control solutions. Systems and subsystems are controlled by pneumatic, electrical and mechanical transducers/sensors and outputs/actuators. Young’s modulus and stress strain graphs are fundamental to all materials, structures and mechanical principles used throughout engineering. Computer Interface/EEPROM programming forms the fundamental basis of systems and control. Flow chart programs, high level programming languages, subroutines and logic control are used to control devices in integrated and complex situations. There are testing regimes for stress, strain, tension, compression and torsion. The analysis of results from such regimes together with information on existing data and specifications tables forms the basis for selecting materials for engineering technologies. Logic control is also used as both an input and output system. Input logic conditions are met and processed, and multiple outputs, often in sequential orders, are produced. Structures are defined as a body of materials selected and used because they can resist applied forces. Equilibrium, forces, structures, bending moments, shear force, torsion and Newton’s 3 Laws of Motion are important when analysing static loads and the application of forces to structures. Newton’s 3 Laws of Motion in conjunction with equilibrium principles are the basis for analysing engineering mechanisms and motion conversion systems. Electronic/electrical The content in this section is specialised knowledge that applies to electrical/electronic engineering. It is divided into four content strands: electrical laws application of laws and principles nature and properties of components and types of circuits units and measurement. Course units Each unit is defined with a particular focus and a selection of learning contexts through which the specific unit content can be taught and learnt. The cognitive difficulty of the content increases with each stage and is referenced to the broad learning described in the outcome progressions. The pitch of the content for each stage is notional and there will be overlap between stages. Stage 1 units provide bridging support and a practical and applied focus to help students develop skills required to be successful for Stage 2 units. Stage 2 units provide opportunities for applied learning but there is a focus more on academic learning. Stage 3 units provide opportunities to extend knowledge and understandings in challenging academic learning contexts. Electrical/electronic materials and components and their application are governed by resistance theory of series and parallel circuits, Ohm’s Law and Kirchhoff’s Law. Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 5 Unit 1AEST The focus for this unit is shaping our lives: inventions and devices. The world is full of products that designers and engineers have developed and created. In this unit students learn processes involved in engineering design as they investigate created products, and design, produce and evaluate an innovative product. Unit 1BEST The focus for this unit is shaping environments: tools and recreation. Engineers have worked creatively and innovatively to overcome problems that have helped people, communities and the environment with everyday scenarios e.g. gas powered camping showers, self-contained BBQs, specialist engineered 4-wheel driving tools or devices, survival devices such as compact folding shovels, die holders for the tail stock of a lathe, stands and jacks for support. Unit 2AEST The focus for this unit is generating motions and energy. This unit provides opportunities to explore how engineering is used to create motion such as engines, buggies or vehicles, using a variety of input energy e.g. Solar Car Challenge, air engines, steam engines, electrical buggies. Unit 2BEST The focus for this unit is moving people: transportation systems. Students design, make and evaluate a transportation device. They apply a range of research and testing strategies to devise the most appropriate systems and utilise the most effective materials for their design. Unit 3AEST The focus for this unit is alternative engineering systems. Students design, make and evaluate an alternate engineering system e.g. EV Challenge. They apply research methods which enable them to proceed with their design. Students use mathematical and graphical models to test ideas and solve a practical design problem related to the application of engineering principles. Unit 3BEST The focus for this unit is systems technologies. Students learn that system technologies are complex organisations of more simple systems designed according to engineering processes. They design, make and evaluate a system technology. 6 Time and completion requirements The notional hours for each unit are 55 class contact hours. Units can be delivered typically in a semester or in a designated time period up to a year depending on the needs of the students. Pairs of units may be delivered concurrently over a one year period. Schools are encouraged to be flexible in their timetabling in order to meet the needs of all of their students. A unit is completed when all assessment requirements for that unit have been met. Only completed units will be recorded on a student's statement of results. Refer to the WACE Manual for details about unit completion and course completion. Vocational Education Training information Vocational Education Training (VET) is nationally recognised training that provides practical work skills and credit towards, or attainment of, a vocational education and training qualification. When considering VET delivery in courses it is necessary to: refer to the WACE Manual, Section 5: Vocational Education Training, and contact education sector/systems representatives for information on operational issues concerning VET delivery options in schools. Australian Quality Training Framework (AQTF) AQTF is the quality system that underpins the national vocational education and training sector and outlines the regulatory arrangements in states and territories. It provides the basis for a nationally consistent, high-quality VET system. The AQTF Standards for Registered Training Organisations outline a set of auditable standards that must be met and maintained for registration as a training provider in Australia. VET delivery VET can be delivered by schools providing they meet Australian Quality Training Framework (AQTF) requirements. Schools need to become a Registered Training Organisation (RTO) or work in partnership (auspicing arrangement) with an RTO to deliver training within the scope for which they are registered. If a school operates in partnership with an RTO, it will be the responsibility of the RTO to assure the quality of the training delivery and assessment. Qualifications identified in this course must be on the scope of registration of the RTO delivering or auspicing training. Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 Units of competency from selected training package qualifications have been taken into account during the development of this course. Schools seeking to link delivery of this course with units of competency or qualification must read the information outlined in the relevant training package/s. This information can be found at the National Training Information Service website: www.ntis.gov.au. National Training Package MEM05 Metal and Engineering Qualifications MEM10105 Certificate I in Engineering MEM20105 Certificate II in Engineering Note: Any reference to qualifications and units of competency from training packages is correct at the time of accreditation. Resources Teacher support materials are available on the Curriculum Council website extranet and can be found at: http://www.curriculum.wa.edu.au/ Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 7 Assessment Refer to the WACE Manual for policy and principles for both school-based assessment and examinations. School-based assessment The three types of assessment in the table below are consistent with the teaching and learning strategies considered to be the most supportive of student achievement of the outcomes in the Engineering Studies course. The table provides details of the assessment types, including examples of different ways that they can be applied and the weighting range for each assessment type. Teachers are to use the assessment table to develop their own assessment outlines. An assessment outline needs to be developed for each class group enrolled in each unit of the course. This outline includes a range of assessment tasks that cover all assessment types and course outcomes with specific weightings. If units are delivered concurrently, assessment requirements must still be met for each unit. In developing assessment outlines and teaching programs the following guidelines should be taken into account. All tasks should take into account teaching, learning and assessment principles from the Curriculum Framework. There is flexibility within the assessment framework for teachers to design school-based assessment tasks to meet the learning needs of students. Student responses may be communicated in any appropriate form e.g. written, oral, graphical, multimedia or various combinations of these. Student work submitted to demonstrate achievement of outcomes should only be accepted if the teacher can attest that, to the best of her/his knowledge, all uncited work is the student’s own. Evidence collected for each unit should include tasks conducted under test conditions. Assessment table Weightings for types Stage 1 10–20% 70–80% 10–20% 8 Stage 2 20–30% 50–60% 20–30% Stage 3 Type of assessment 30–40% Design Students research past, present or proposed engineering projects. Teachers assess how students conduct the investigation and communicate their findings in appropriate forms e.g. written, oral, graphical, multimedia, but the folio/journal is preferred. Types of evidence may include: observation checklists, evaluation tools (self, peer), journal, presentation of design and project proposals using a range of communication strategies. This assessment type is best suited to the collection of evidence on student achievement of Outcomes 1, 2 and 4. 20–30% Production Extended and manufacturing project(s) where students control, evaluate and manage processes as necessary. Teachers assess the students’ understandings, confidence and competence when using skills in manufacturing processes and when managing production plans. Teachers must also assess how well students test materials, components and systems safely. The made product in terms of quality and finish is also assessed. Types of evidence must include made products, journal, observation checklists and evaluation tools (self, peer), on balance judgements. This assessment type is best suited to the collection of evidence on student achievement of Outcomes 1 and 3. 40–50% Response Students apply their knowledge and skills in responding to a series of stimuli or prompts in the following formats: exam, reports/essays, oral, ICT visual response, worksheets. Types of evidence may include: observation checklists, reports/essays/worksheets, power point presentations and on-balance judgements. This assessment type is best suited to the collection of evidence on student achievement of Outcomes 2 and 4. Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 Grades Schools assign grades following the completion of the course unit. The following grades may be used: Grade A B C D E Interpretation Excellent achievement High achievement Satisfactory achievement Limited achievement Inadequate achievement Preliminary Stage units are not graded. Achievement in these units is reported as either Completed or Not Completed. Each grade is based on the student’s overall performance for the course unit as judged by reference to a set of pre-determined standards. These standards are defined by grade descriptions. Grade descriptions: describe the range of performances and achievement characteristics of grades A, B, C, D and E in a given stage of a course can be used at all stages of planning, assessment and implementation of courses, but are particularly important as a final point of reference in assigning grades are subject to continuing review by the Council. The grade descriptions for this course can be accessed on the course page at http://www.curriculum.wa.edu.au/ Examination details There are separate examinations for Stage 2 pairs of units and Stage 3 pairs of units. In their final year, students who are studying at least one Stage 2 pair of units (e.g. 2A/2B) or one Stage 3 pair of units (e.g. 3A/3B) will sit an examination in this course, unless they are exempt. Each examination will assess the specific content, knowledge and skills described in the syllabus for the pair of units studied. Details of the examinations in this course are prescribed in the examination design briefs (pages 31–33). Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 9 UNIT 1AEST Unit description The focus for this unit is shaping our lives: inventions and devices. The world is full of products that designers and engineers have developed and created. In this unit students learn processes involved in engineering design as they investigate created products, and design, produce and evaluate an innovative product. Students understand the properties of a variety of materials and the way in which they are incorporated into components or structures. In this unit students understand processes involved in engineering design as they investigate created products and design, make and evaluate an innovative product. Unit learning contexts Within the broad area of shaping our lives: inventions and devices, teachers may choose one or more of the following contexts (this list is not exhaustive): engineered and fabricated gadgets camping and four wheel drive devices consumer products with an engineering focus small specialist tools simple engines or motors. Unit content This unit includes knowledge, understandings and skills to the degree of complexity following the model and described below. It is divided into core content and specialist engineering fields. Students must study all of the core content material and at least one of the specialist engineering fields. Core content Engineering design process Principles and elements of design state, define and use the design principles of: function cost safety to inform and develop a design brief. design for own design needs. Designing skills Investigating illustrate and explain existing and similar designs using: manual sketching skills simple technological graphs and charts extracted information basic ICT using internet searches. 10 Devising illustrate and explain at least three similar design ideas using annotated graphics and sketches review the suitability of at least one design idea using reasoning statements set against the design principles. Producing produce a given engineering solution: using a given sequence of manufacture and materials/components list using orthogonal and 3D drawings with dimensions reading and following simple conventions using and applying functional tolerances. calculate linear dimensions from a given solution including: rectangular square developments/nets shapes. use measuring tools and precision measuring instruments such as Vernier callipers and micrometers. Evaluating evaluate the final engineering solution using reasoning statements against the design principles. Specialist engineering fields Mechanical Materials define engineering material properties of hardness, strength and tendency to corrode for the following materials: mild steel/structural steel aluminium brass nylon copper stainless steel. Statics state that force is measured in newtons [N] identify how lever length relates to mechanical advantage in crowbars, can crushers, trebuchets explain rigidity, strength and resilience in simple static structures, for example: angular ties in square and rectangular frames use of angle iron or hollow section instead of flat addition of a web, gusset or fillet to a corner. Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 Dynamics solve simple single stage, single variable problems of speed, distance and time using the s equation: v av t Mechanisms identify and explain the operating principles of the following motion conversion systems: cranks and slider linkages rack and pinion bevel gears bearings and bushes. Electronic/electrical Electrical laws simple battery and resistor addition laws. Application of laws and principles calculate total resistance of resistors in series using Rt = R1 + R2 + … calculate total resistance of capacitors in parallel using Ct = C1 + C2 + … determine total voltages of cells and batteries in series and parallel. Programming identify, explain and use a simple linear flow chart of simple sequences including traffic light sequences use flow chart programs to control devices to perform single functions such as making a buggy move forward or turn a corner. Digital control identify and explain microprocessor systems and simple circuit design. Interfacing identify and explain analogue and digital inputs and outputs use common electrical components such as batteries, resistors, capacitors, diodes and LEDs. Actuators describe and use mechanical actuators in control systems such as: mechanical drives–gears, chain drives and pulleys levers pneumatic cylinders. Note: Pneumatic symbols are not required. Nature and properties of components and types of circuits identify common conductors, insulators and semiconductors identify and use common forms of switches identify purpose and use of common passive components identify and use circuit symbols and conventions. Units and measurement define and explain voltage and state that it is measured in volts (V) define and explain current flow and state that it is measured in amps (A) define and explain resistance and state that it is measured in ohms () use a digital multimeter to measure voltage, current and resistance describe the resistor colour code system and derive resistor values. VET units of competency Units of competency may be delivered in appropriate learning contexts if all AQTF requirements are met. Some suggested units of competency suitable for integration are: Certificate I unit: MEM14005A Plan a complete activity Certificate I and Certificate II unit: MEM14004A Plan to undertake a routine task Note: Any reference to qualifications and units of competency from training packages is correct at the time of accreditation. Systems and control Nature of control systems define and describe the main operating features of remote and autonomously controlled control systems develop and draw universal systems diagrams with inputs, processes and outputs draw simple flow charts using standard defined symbols prior to writing programs identify and use correct symbols and conventions. Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 11 Assessment The three types of assessment in the table below are consistent with the teaching and learning strategies considered to be the most supportive of student achievement of the outcomes in the Engineering Studies course. The table provides details of the assessment type, examples of different ways that these assessment types can be applied and the weighting range for each assessment type. Weighting Stage 1 Type of assessment 10–20% Design Students research past, present or proposed engineering projects. Teachers assess how students conduct the investigation and communicate their findings in appropriate forms e.g. written, oral, graphical, multimedia, but the folio/journal is preferred. Types of evidence may include: observation checklists, evaluation tools (self, peer), journal, presentation of design and project proposals using a range of communication strategies. This assessment type is best suited to the collection of evidence on student achievement of Outcomes 1, 2 and 4. 70–80% Production Extended and manufacturing project(s) where students control, evaluate and manage processes as necessary. Teachers assess the students’ understandings, confidence and competence when using skills in manufacturing processes and when managing production plans. Teachers must also assess how well students test materials, components and systems safely. The made product in terms of quality and finish is also assessed. Types of evidence must include made products, journal, observation checklists and evaluation tools (self, peer), on balance judgements. This assessment type is best suited to the collection of evidence on student achievement of Outcomes and 3. 10–20% Response Students apply their knowledge and skills in responding to a series of stimuli or prompts in the following formats: exam, reports/essays, oral, ICT visual response, worksheets. Types of evidence may include: observation checklists, reports/essays/worksheets, power point presentations and on-balance judgements. This assessment type is best suited to the collection of evidence on student achievement of Outcomes 2 and 4. 12 Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 graphical and written research Computer Aided Drafting and sketching presentation skills. UNIT 1BEST Unit description The focus for this unit is shaping environments: tools and recreation. Engineers have worked creatively and innovatively to overcome problems with everyday scenarios e.g. gas powered camping showers, self-contained BBQs, specialist engineered four-wheel driving tools or devices, survival devices such as compact folding shovels, die holders for the tail stock of a lathe, stands and jacks for support. Students research and investigate a range of materials appropriate for the shaped environment contexts. They undertake a process of designing and constructing a project. In this unit students understand processes involved in engineering design as they investigate created products and design, make and evaluate an innovative product. Unit learning contexts Within the broad area of shaping environments; tools and recreation teachers may choose one or more of the following learning contexts (this list is not exhaustive): survival tools specialist engineering tools agricultural machinery simple engines or motors jigs recreational tools. Unit content This unit includes knowledge, understandings and skills to the degree of complexity following the model and described below. It is divided into core content and specialist engineering fields. Students must study all of the core content material and at least one of the specialist engineering fields. Core content Engineering design process Principles and elements of design state, define and use the design principles of finish aesthetics to inform and develop a design brief. Designing skills manual Devising illustrate and explain at least three similar or different design ideas using annotated graphics and sketches review the suitability of at least one design idea using reasoning statements set against the design principles. Producing produce modified and/or refined solutions derived from given plans using: a modified and refined sequence of operations and materials/components list modified and refined orthogonal 2D drawings and 3D sketches with dimensions AS drawing conventions costing sheets including modifications and refinements measuring tools and precision measuring instruments such as Vernier callipers and micrometers. calculate dimensions from a given solution including radii/diameter additions and subtractions. Note: All orthogonal drawings must: include at least two corresponding orthogonal views be linearly correct but do not need to be to scale. Note: All 3D sketches must: be clear and understandable include necessary dimensions. Note: All modifications and/or refinements must include enough detail for another suitably qualified person to manufacture. Evaluating evaluate final solution using reasoning statements against the design principles. Specialist engineering fields Mechanical Materials define and describe engineering properties of ferrous and non-ferrous metals and their tendency to corrode for: mild steel structural steel aluminium brass nylon copper stainless steel. Investigating illustrate and explain similar and different designs using: Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 13 Statics define equilibrium and basic structural integrity in simple structures using Newton’s 3rd Law statement: For every force acting on an object, the object will exert an equal, yet opposite, force on its cause. calculate loads or distances on 2D balanced beams/seesaws, with two loads, using: M rF M 0 CWM ACWM identify and explain application of webs, bosses, supports, fillets and folds for strength and rigidity. Dynamics define the operating principles in the following four motions: linear reciprocating oscillating rotary. explain and calculate work and power using the expressions: W Fs Fs Power t using single stage, single variable calculations. Mechanisms identify and explain the operating principles of the following motion conversion systems including the change in the direction of force and velocity: levers and linked levers gears, pulley and chain drives, and idler gears worm and wheel pulleys belt including tensioner, twist to change angle/direction cam and lifters including dimensions of lift, radius and lobe ratchet and pawl. Electronic/electrical Electrical laws Ohm’s Law V = IR Application of laws and principles calculate total resistance of resistors in parallel 1 1 1 ... using Rt R1 R 2 14 calculate total capacitance of capacitors in 1 1 1 ... series using Ct C1 C 2 use Ohm’s Law to calculate single stage, single variable problems of voltage, current and resistance using V = IR. Nature and properties of components and types of circuits explain the advantages and disadvantages of series and parallel circuits in terms of voltage related to function identify purpose, operation and use of common semiconductors, including: diode Light Emitting Diode NPN transistor PNP transistor MOSFET transistors voltage regulator Integrated Circuits. identify materials used in common passive and active components. Units and measurement identify and correctly use the following prefixes for units of measurement: milli micro pico kilo mega giga in relation to units of voltage, current, resistance and capacitance measurement. Systems and control Nature of control systems define and describe open loop control describe common sensors and actuators that implement open loop control in common applications e.g. burglar alarms draw systems diagrams showing types and number of inputs and outputs identify and describe common pseudo code programming commands. Programming identify, explain and use time delays in linear flow chart control programming e.g. traffic lights identify, explain and use single loop flow charts to cause a linear stage of events. Digital control describe the fundamental operating principles of power supply for microprocessors describe the purpose and use of ADC for analogue inputs. Interfacing calculate total resistance of resistors in series and parallel combinations using: Rt = R 1 + R 2 + … 1 1 1 ... Rt R1 R 2 Actuators describe and use common electro-mechanical devices including relays and solenoids. Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 VET units of competency Assessment Units of competency may be delivered in appropriate learning contexts if all AQTF requirements are met. Some suggested units of competency suitable for integration are: The three types of assessment in the table below are consistent with the teaching and learning strategies considered to be the most supportive of student achievement of the outcomes in the Engineering Studies course. The table provides details of the assessment type, examples of different ways that these assessment types can be applied and the weighting range for each assessment type. Certificate I units: MEM16006A Organise and communicate information MEM14005A Plan a complete activity Certificate I and Certificate II units: MEM14004A Plan to undertake a routine task MEM15024A Apply quality procedures MEM13014A Apply principles of occupational health and safety in the work environment Weighting Stage 1 Type of assessment 10–20% Design Students research past, present or proposed engineering projects. Teachers assess how students conduct the investigation and communicate their findings in appropriate forms e.g. written, oral, graphical, multimedia, but the folio/journal is preferred. Types of evidence may include: observation checklists, evaluation tools (self, peer), journal, presentation of design and project proposals using a range of communication strategies. This assessment type is best suited to the collection of evidence on student achievement of Outcomes 1, 2 and 4. 70–80% Production Extended and manufacturing project(s) where students control, evaluate and manage processes as necessary. Teachers assess the students’ understandings, confidence and competence when using skills in manufacturing processes and when managing production plans. Teachers must also assess how well students test materials, components and systems safely. The made product in terms of quality and finish is also assessed. Types of evidence must include made products, journal, observation checklists and evaluation tools (self, peer), on balance judgements. This assessment type is best suited to the collection of evidence on student achievement of Outcomes 1 and 3. 10–20% Response Students apply their knowledge and skills in responding to a series of stimuli or prompts in the following formats: exam, reports/essays, oral, ICT visual response, worksheets. Types of evidence may include: observation checklists, reports/essays/worksheets, power point presentations and on-balance judgements. This assessment type is best suited to the collection of evidence on student achievement of Outcomes 2 and 4. Note: Any reference to qualifications and units of competency from training packages is correct at the time of accreditation. Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 15 Designing skills UNIT 2AEST Unit description The focus for this unit is generating motions and energy. This unit provides opportunities to explore how engineering is used to create motion such as engines, buggies or vehicles, using a variety of input energy e.g. Solar Car Challenge, air engines, steam engines, electrical buggies. In the development of projects, students research materials and structures. They undertake a process of designing, problem-solving and solution development as well as explore making and construction processes. Students integrate a range of skills including mathematical skills as they design and develop ideas. Unit learning contexts Within the broad area of generating motions and energy, teachers may choose one or more of the following learning contexts (this list is not exhaustive): motion conversion systems energy conversion systems solar car challenge air engines electrical engines. Devising illustrate and explain the development of multiple concepts, using annotated freehand graphics and sketches review the suitability of all devised design ideas using reasoning statements against the design principles review the suitability of production processes proposed. Producing produce solution using: sequence of manufacture and materials/components list orthogonal drawings and 3D sketches, with dimensions. Note: All orthogonal drawings must: include at least three corresponding orthogonal views be to scale be linearly correct. Note: All 3D sketches must: be clear and understandable include necessary dimensions. Note: All solutions must include enough detail for another suitably qualified person to manufacture. Unit content This unit includes knowledge, understandings and skills to the degree of complexity following the model and described below. It is divided into core content and specialist engineering fields. Students must study all of the core content material and at least one of the specialist engineering fields. Core content Engineering design process Principles and elements of design state, define and apply the following design principles: demand environment ergonomics designing for others to inform and develop a design brief and investigation. prepare designs considering the needs of others who have similar interests, experiences and backgrounds. 16 Investigating illustrate and explain the development of applicable designs and alternative solutions using: data sheets, graphs and charts extracted information suppliers’ catalogues. Evaluating evaluate final solution using reasoning statements against the design principles. Enterprise, environment and community Innovation and creativity investigate and explain a significant engineering invention and explain its influence on society. Socially conscious engineering identify, investigate and explain impacts of engineering technologies on the environment e.g. application of solar car technology to future power generation solutions. Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 Specialist engineering fields Mechanical Materials define and describe for pure, composite and alloy materials the resultant property alterations effected by the processing and manufacturing techniques of: hardening tempering normalising case hardening annealing. solve simple single stage, single variable calculations of stress, strain, and Young’s Modulus, of engineering materials using: E state and match to function the fundamental dynamic properties of ductility, plasticity and malleability for ferrous and non-ferrous metals. Statics apply and calculate mechanical advantage using: Mechanical Advantage = Fout Fin solve problems in levers, crowbars, beams etc. using: M rF FH 0 F 0 M0 V in single stage, single variable calculations. perform single staged, single variable calculations using: rF to find torque, force or diameter/radius. Dynamics define pressure, explain what may cause it, and state that it is measured in Pascals or Nm-2 solve problems relating to pressure using the formula: F P A in single stage, single variable calculations. explain the principles of acceleration, velocity, distance and time, and perform single variable calculations using: v u a t F ma Mechanisms calculate: rpm diameters numbers of teeth rack and pinion dimensions and travel rates for compound gear trains with shared axles and worm drives including single and multiple start threads using single variable formulae. Electronic/electrical Electrical laws apply Kirchhoff’s Law of a circuit junction I t I1 I2 ... I 0 V 0 Application of laws and principles calculate total resistance of resistors in series and parallel combinations calculate total capacitance of capacitors in series and parallel combinations apply Kirchhoff’s Law and V = IR to calculate voltage drop across nodes in combinational series and parallel resistance circuits apply Kirchhoff’s Law and V = IR to calculate current through components in combinational series and parallel resistance circuits apply Kirchhoff’s Law and V = IR to calculate unknown resistances in combinational series and parallel resistance circuits. Nature and properties of components and types of circuits explain principles of operation for: relays transformers solenoids. Units and measurement apply the following metric unit prefixes appropriately when calculating answers in problems: milli micro pico kilo mega giga. Systems and control Nature of control systems define and describe closed loop control including positive and negative feedback describe common sensors and actuators that implement closed loop control in common applications e.g. line followers develop, draw and explain system diagrams with extended sub-systems incorporated. Programming identify, explain and use ‘if then’ and ‘for next’ loops in step-by-step applications to cause sequential outputs Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 17 identify, explain and use a program loop for a set number of times or while a certain condition exists fluently use graphic based programming tools such as Flowchart, Crocodile Clips, Mindstorms or similar. Digital control select and use appropriate controller for application i.e. PICAXE model or different type of controller identify and justify appropriate power supply systems for microprocessors explain the functions and describe the overall architecture of microprocessor control systems. Logic control identify, explain and use AND, OR, NOT, NOR, XOR, NAND and XNOR logic symbols and truth tables derive truth tables from combinational logic circuits develop simple logic diagrams to implement control strategies. VET units of competency Units of competency may be delivered in appropriate learning contexts if all AQTF requirements are met. Some suggested units of competency suitable for integration are: Certificate I units: MEM16006A Organise and communicate information MEM14005A Plan a complete activity Certificate I and Certificate II units: MEM14004A Plan to undertake a routine task MEM 15024A Apply quality procedures MEM13014A Apply principles of occupational health and safety in the work environment MEM12001B Use comparison and basic measuring devices MEM12024A Perform computations MEM16008A Interact with computing technology Note: Any reference to qualifications and units of competency from training packages is correct at the time of accreditation. Interfacing explain and perform calculations to determine current [I], voltage [V], resistance [R], power [P], energy [E] and time [t] in different parts of simple circuits using: P IV P V2 R P I 2R calculate voltage drop across nodes and components in voltage divider circuits using: V IR R1 V1 Vcc (R1 R 2 ) V2 Vcc R2 (R 1 R 2 ) Actuators derive final speed from drive systems using gearboxes, power loss and torque calculations: rF P Fv state and explain the application of the following mechanical systems in a control environment: linkages rack and pinion bevel gears gears, pulley and chain drives, and idler gears pulleys. 18 Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 Assessment The three types of assessment in the table below are consistent with the teaching and learning strategies considered to be the most supportive of student achievement of the outcomes in the Engineering Studies course. The table provides details of the assessment type, examples of different ways that these assessment types can be applied and the weighting range for each assessment type. Weighting Stage 2 Type of assessment 20–30% Design Students research past, present or proposed engineering projects. Teachers assess how students conduct the investigation and communicate their findings in appropriate forms e.g. written, oral, graphical, multimedia, but the folio/journal is preferred. Types of evidence may include: observation checklists, evaluation tools (self, peer), journal, presentation of design and project proposals using a range of communication strategies. This assessment type is best suited to the collection of evidence on student achievement of Outcomes 1, 2 and 4. 50–60% Production Extended and manufacturing project(s) where students control, evaluate and manage processes as necessary. Teachers assess the students’ understandings, confidence and competence when using skills in manufacturing processes and when managing production plans. Teachers must also assess how well students test materials, components and systems safely. The made product in terms of quality and finish is also assessed. Types of evidence must include made products, journal, observation checklists and evaluation tools (self, peer), on balance judgements. This assessment type is best suited to the collection of evidence on student achievement of Outcomes 1 and 3. 20–30% Response Students apply their knowledge and skills in responding to a series of stimuli or prompts in the following formats: exam, reports/essays, oral, ICT visual response, worksheets. Types of evidence may include: observation checklists, reports/essays/worksheets, power point presentations and on-balance judgements. This assessment type is best suited to the collection of evidence on student achievement of Outcomes 2 and 4. Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 19 Designing skills UNIT 2BEST Investigating use brainstorming strategies such as spider diagrams to develop a design brief. Unit description The focus for this unit is moving people: transportation systems. Students design, make and evaluate a transportation device. They apply a range of research and testing strategies to devise the most appropriate systems and utilise the most effective materials for their design. In their designs students utilise a range of two or more systems, combined in such a way as to engineer an effective transportation device. Some systems will be pre-fabricated, others will be developed and integrated by the students into their design. Fundamental mathematical principles appropriate in engineering will be developed by students throughout the unit. Unit learning contexts Within the broad area of moving people: transportation systems, teachers may choose one or more of the following learning contexts (this list is not exhaustive): solar powered transportation mass transit recreational vehicles energy to motion conversion. Unit content This unit includes knowledge, understandings and skills to the degree of complexity following the model and described below. It is divided into core content and specialist engineering fields. Students must study all of the core content material and at least one of the specialist engineering fields. Core content Engineering design process Principles and elements of design state, define and use the following design elements: anthropometric data including knowledge of 5th–95th percentile and human dimension bell curves to inform and develop a design brief and investigation. design for own design needs with attention to the design needs of others working with similar skills. 20 Devising illustrate and use partial, functional design synthesis when developing multiple concepts review the suitability of design ideas using explanations against the design principles. Producing produce solutions using: scaled orthogonal drawings with dimensions dimensioned 3D sketches relevant and appropriate industrial tolerances. calculate: surface area values combinational rectangular and/or square dimensions with circular material surface developments. Note: All orthogonal drawings must: include at least three corresponding orthogonal views be to scale be linearly correct. Note: All 3D sketches must: be clear and understandable include necessary dimensions. Note: All solutions must include enough detail for another suitably qualified person to manufacture. Evaluating use design criteria to evaluate a project at each stage of development against all design principles using explanations. Enterprise, environment and community Innovation and creativity investigate engineering innovations in the context of past innovations identify an engineering innovation and explain its origins through past inventions and innovations. Socially conscious engineering investigate sustainable engineering systems and the incorporation of these ideas into project design e.g. a Stirling engine powered by a solar heat source identify and explain the stages of a life cycle analysis chart of an everyday item e.g. a car battery, a milk carton or a mobile phone. Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 Specialist engineering fields Mechanical Materials define and describe for common engineering materials, resultant structural changes and property alterations that occur as an outcome of the following processing and manufacturing techniques: hardening tempering normalising case hardening annealing. draw and interpret shapes and gradients of stress/strain diagrams including their component parts: elastic limit yield stress yield strain ultimate tensile stress energy absorbed for the following materials only: structural steel mild steel cast iron aluminium brass polycarbonate nylon. Statics use CWM ACWM with perpendicular 2D components only, in multi stage, single variable calculations, to solve problems of force and distance explain the principle of equilibrium in static structures using Newton’s 3rd law of reaction solve single stage, single variable problems using the formulae: F A L L Ultimate Stress Factor of Safety Safe Working Stress Dynamics define potential energy as energy of position or state define kinetic energy as energy of motion solve problems of energy, mass velocity, time, distance and acceleration using: Ep mgh Ek v 2 u2 2as s ut 12 at 2 Electronic/electrical Electrical laws define electrical power using voltage, current and resistance define energy in terms of power and time. Application of laws and principles calculate voltage drop across nodes and components in voltage divider circuits using: V IR R1 V1 Vcc (R1 R 2 ) V2 Vcc R2 (R 1 R 2 ) explain and calculate power, voltage, current and resistance using: P IV V2 R 2 P I R P calculate voltage drop across nodes and components in voltage divider circuits with LEDs explain and calculate energy, power, voltage and time using E VIt solve problems of power, energy and efficiency using the relationship: Efficiency = Output x 100% Input state and explain AC input and output voltages, and coil turns in simple step up and step down AC transformers use VpIp VsI s to solve single stage, single variable problems with step up and down AC transformers. Nature and properties of components and types of circuits calculate amplifier gain and current in circuits where transistors are used as switches only I using h f e c Ib 1 mv 2 2 Efficiency = Output x 100% Input Mechanisms calculate the following for compound gear trains and associated linked mechanisms: drum circumference winch mechanisms variables pulley ratios and amounts rotational to linear velocities time factors to lift/travel distances. explain how diodes can be used in a diode bridge explain how the biased voltage across the base/emitter of an NPN transistor as a switch is 0.7V explain how the biased voltage across the base/emitter of a PNP silicone transistor as a switch is -0.7V Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 21 explain half wave and full wave rectification in power supplies and AC to DC conversion explain smoothing capacitors in full wave rectification explain how relays are used as output devices with transistors to switch on/off output devices with different supply voltages explain how voltage dividers can be used as input systems with transistors in switching mode. Units and measurement identify measurement of transistor gain as a factor and number only define and explain electrical power and state that it is measured in watts [W] define and explain electrical energy and state that it is measured in joules [J] read and interpret an analogue multimeter. Systems and control Nature of control systems identify, develop and explain control diagrams including error functions and error detectors. Programming identify, explain and use ‘if then’ and ‘for next’ loops to process multiple inputs and cause multiple outputs identify and explain program branching and conditional statements. VET units of competency Units of competency may be delivered in appropriate learning contexts if all AQTF requirements are met. Some suggested units of competency suitable for integration are: Certificate I units: MEM16006A Organise and communicate information MEM14005A Plan a complete activity Certificate I and Certificate II units: MEM14004A Plan to undertake a routine task MEM 15024A Apply quality procedures MEM13014A Apply principles of occupational health and safety in the work environment MEM12001B Use comparison and basic measuring devices MEM12024A Perform computations MEM16008A Interact with computing technology Certificate II unit: MEM09002B Interpret technical drawing Note: Any reference to qualifications and units of competency from training packages is correct at the time of accreditation. Digital control identify, contrast and explain the differences between logic gate and microprocessor control systems. Logic control develop truth tables from specification briefs develop, describe and draw logic diagrams and circuits based on standard ICs. Interfacing explain and use analogue sensors such as LDRs, temperature sensors, potentiometers, variable resistors, moisture sensors, level sensors etc in control scenarios derive and/or calculate simple voltage divider circuits to sense a condition and act as an input to a microprocessor derive and/or calculate resistor and LED circuits as digital outputs from microprocessors. Actuators identify and explain 5/2 and 3/2 electrically/electronically actuated valves used as output devices explain and use feedback devices to measure actuator condition e.g. speed of rotation, limit switches etc. 22 Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 Assessment The three types of assessment in the table below are consistent with the teaching and learning strategies considered to be the most supportive of student achievement of the outcomes in the Engineering Studies course. The table provides details of the assessment type, examples of different ways that these assessment types can be applied and the weighting range for each assessment type. Weighting Stage 2 Type of assessment 20–30% Design Students research past, present or proposed engineering projects. Teachers assess how students conduct the investigation and communicate their findings in appropriate forms e.g. written, oral, graphical, multimedia, but the folio/journal is preferred. Types of evidence may include: observation checklists, evaluation tools (self, peer), journal, presentation of design and project proposals using a range of communication strategies. This assessment type is best suited to the collection of evidence on student achievement of Outcomes 1, 2 and 4. 50–60% Production Extended and manufacturing project(s) where students control, evaluate and manage processes as necessary. Teachers assess the students’ understandings, confidence and competence when using skills in manufacturing processes and when managing production plans. Teachers must also assess how well students test materials, components and systems safely. The made product in terms of quality and finish is also assessed. Types of evidence must include made products, journal, observation checklists and evaluation tools (self, peer), on balance judgements. This assessment type is best suited to the collection of evidence on student achievement of Outcomes 1 and 3. 20–30% Response Students apply their knowledge and skills in responding to a series of stimuli or prompts in the following formats: exam, reports/essays, oral, ICT visual response, worksheets. Types of evidence may include: observation checklists, reports/essays/worksheets, power point presentations and on-balance judgements. This assessment type is best suited to the collection of evidence on student achievement of Outcomes 2 and 4. Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 23 UNIT 3AEST Unit description The focus for this unit is alternative engineering systems. Students design, make and evaluate an alternate engineering system e.g. Electric Vehicle Challenge. They apply research methods which enable them to proceed with their design. Students use mathematical and graphical models to test ideas and solve a practical design problem related to the application of engineering principles. Unit learning contexts Within the broad area of alternative engineering systems, teachers may choose one or more of the following learning contexts (this list is not exhaustive): production processes and systems small run production lines power generation systems EV challenge. Producing produce solutions using: timelines progress testing 2D/3D CAD drawing and modelling costings, budget calculations predictions. and Evaluating evaluate the project at appropriate stages throughout the design process against all design criteria, and client needs. Enterprise, environment and community Innovation and creativity investigate a modern innovation linked to the engineering design project and explain its impact on society and environment. Socially conscious engineering investigate energy changes involved in industrial systems and their impacts on society and environment identify and explain the stages of a life cycle analysis chart of an engineering item. Specialist engineering fields Mechanical Unit content This unit includes knowledge, understandings and skills to the degree of complexity following the model and described below. It is divided into core content and specialist engineering fields. Students must study all of the core content material and at least one of the specialist engineering fields. Core content Engineering design process Principles and elements of design state, define and use the following design elements: demographics prototyping/modelling to inform and develop a design brief and investigation. design for client needs. Designing skills Investigating use appropriate innovative designs and alternative solutions to inform own design brief and investigation. Devising use full functional design synthesis when devising ideas using manual and 2D/3D CAD/ICT drawing and graphics modelling evaluate the suitability of design ideas in relation to client needs. 24 Materials define and describe for common engineering materials the resultant structural changes and property alterations that result from the following processing and manufacturing techniques: bright drawn cold drawn casting forging pressing. define and describe properties, under an applied load or stress, of ferrous and nonferrous metals and plastics in relation to their ductility, plasticity and malleability draw and interpret shapes and gradients of stress/strain diagrams including their component parts: elastic limit yield stress yield strain ultimate tensile stress energy absorbed for the following materials: timber [Pinus radiata] gold plastic polypropylene copper mild steel stainless steel. Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 Statics use CWM Electronic/electrical ACWM with at least three 2D perpendicular and/or parallel forces and reactions to calculate support forces and internal member forces in selected structures: trusses beams in interconnected, single variable, multiple staged problems. calculate horizontal, vertical and angular forces using right angle triangle trigonometry for given structures calculate the resolution of multiple 2D horizontal, vertical and angular forces acting on structural joints using nodal analysis. Dynamics solve problems that link materials, dynamics, statics and mechanisms formulae and principles in single variable, multi stage calculations, in familiar settings using formulae such as: FH 0 FV 0 M0 CWM ACWM Mechanical Advantage Fout Fin v u t F ma Ep mgh Ek 1 1 1 ... Ct C1 C 2 1 1 1 ... Rt R1 R 2 Ohm’s Law V IR Kirchhoff’s law I I1 I2 ... t I0 1 mv 2 2 Efficiency = Output x 100% Input v 2 u 2 2as s ut 1 at 2 2 E F A rF L L Ultimate Stress Factor of Safety Safe Working Stress V0 power P IV a M rF Application of laws and principles derive and/or calculate transistor gain and base, collector and emitter currents in cut off, saturation and forward active models using Ic hfe Ib perform calculations to determine current [I], voltage [V], resistance [R], power [P], energy [E] and time [t] in different parts of simple and compound circuits total resistance and capacitance in series and parallel C t C1 C 2 ... R t R1 R 2 ... P V2 R P I 2R energy E VIt Efficiency = Output x 100% Input transformer theory VpIp VsI s Voltage divider theory R1 V1 Vcc (R1 R 2 ) R2 V2 Vcc (R 1 R 2 ) Nature and properties of components and types of circuits explain the purpose, operation and use of digital integrated circuits [ICs]. Units and measurement use a Cathode Ray Oscilloscope [CRO] to measure voltage and time. Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 25 Systems and control Assessment Nature of control systems develop proportional control solutions based on control diagrams. The three types of assessment in the table below are consistent with the teaching and learning strategies considered to be the most supportive of student achievement of the outcomes in the Engineering Studies course. The table provides details of the assessment type, examples of different ways that these assessment types can be applied and the weighting range for each assessment type. Programming use PICAXE, Basic, C or similar high level programming language to write control programs identify, explain and use: sequence diagrams routines and subroutines. identify, explain and use multi-tasking programs. Weighting Stage 3 Type of assessment 30–40% Design Students research past, present or proposed engineering projects. Teachers assess how students conduct the investigation and communicate their findings in appropriate forms e.g. written, oral, graphical, multimedia, but the folio/journal is preferred. Types of evidence may include: observation checklists, evaluation tools (self, peer), journal, presentation of design and project proposals using a range of communication strategies. This assessment type is best suited to the collection of evidence on student achievement of Outcomes 1, 2 and 4. 20–30% Production Extended and manufacturing project(s) where students control, evaluate and manage processes as necessary. Teachers assess the students’ understandings, confidence and competence when using skills in manufacturing processes and when managing production plans. Teachers must also assess how well students test materials, components and systems safely. The made product in terms of quality and finish is also assessed. Types of evidence must include made products, journal, observation checklists and evaluation tools (self, peer), on balance judgements. This assessment type is best suited to the collection of evidence on student achievement of Outcomes 1 and 3. 40–50% Response Students apply their knowledge and skills in responding to a series of stimuli or prompts in the following formats: exam, reports/essays, oral, ICT visual response, worksheets. Types of evidence may include: observation checklists, reports/essays/worksheets, power point presentations and on-balance judgements. This assessment type is best suited to the collection of evidence on student achievement of Outcomes 2 and 4. Digital control identify, explain, design and produce microprocessor control systems including input conditioning and driving of output devices. Logic control explain and use multiple input gates develop, describe and draw NAND gate only logic circuits derive Boolean logic expressions from combinational logic circuits. Interfacing derive and/or calculate transistor circuits to drive digital outputs from microprocessors e.g. to turn small motors on and off identify and describe output systems required to drive higher current devices such as Darlington arrays, relays and solenoids explain and use Pulse Width Modulation to control outputs e.g. motor speed control. 26 Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 UNIT 3BEST Devising develop and use prototyping when devising and testing ideas. Unit description Producing produce solution using financial project management in conjunction with client needs. The focus for this unit is systems technologies. Students learn that technologies are complex organisations of more than simple systems designed according to engineering processes and clients’ requirements. They design, make and evaluate a system technology. Students understand systems, the extent to which they are commonly used, and the impacts on and determinism by society and the environment. Students experiment with a range of systems, through both programming controllers and developing appropriate input and output applications. Unit learning contexts Within the broad area of systems technologies, teachers may choose one or more of the following learning contexts (this list is not exhaustive): brake monitoring systems environment monitoring and control robotics. Unit content This unit includes knowledge, understandings and skills to the degree of complexity following the model and described below. It is divided into core content and specialist engineering fields. Students must study all of the core content material and at least one of the specialist engineering fields. Core content Engineering design process Principles and elements of design state, define and use the following design elements: functional/working prototype modelling. design for clients’ needs. Designing skills Investigating use case study research to inform design brief and investigation indicate and explain development of existing solutions against functional, social, environmental and economic factors to inform design brief and investigation. Evaluating evaluate a project throughout the design process against all design criteria and client needs. Enterprise, environment and community Innovation and creativity investigate and describe the development of unconventional and innovative solutions to engineering challenges. Socially conscious engineering investigate and describe societal impacts and benefits of sustainable versus needs systems using historical case studies that demonstrate the impact of technologies on society and environment. Specialist engineering fields Mechanical Materials define and describe the following fundamental static and dynamic properties for common engineering materials: dynamic creep fatigue toughness density resilience brittleness stiffness. describe and use destructive and nondestructive testing of materials to determine ultimate tensile strength and ultimate compressive strength. Statics draw and interpret shear force [SF] diagrams use shear force [SF] diagrams to draw and interpret bending moment [BM] diagrams use freehand sketches to draw universally distributed loads [UDLs] in bending moment [BM] diagrams calculate forces in the following 2D structures: simply supported beams and cantilevers simple supported triangular trusses using method of sections calculations. Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 27 power o P IV Dynamics solve problems that link materials, dynamics, statics and mechanisms formulae and principles in single variable, multi stage calculations, in familiar and unfamiliar settings using formulae such as: M 0 F 0 M rF CWM ACWM Mechanical Advantage Fout Fin v u t F ma Ep mgh Ek 1 mv 2 2 Electronic/electrical Application of laws and principles solve single variable, multi staged, integrated electrical/electronic problems using the following laws and concepts: total resistance and capacitance in series and parallel o C t C1 C 2 ... o R t R1 R 2 ... o 1 1 1 ... Ct C1 C 2 1 1 1 ... Rt R1 R 2 Ohm’s Law o V IR Kirchhoff’s law o I t I1 I2 ... o o o I 0 V 0 V2 R o P I 2R energy o E VIt Efficiency = Output x 100% Input transistor theory Ic o hfe Ib transformer theory o VpIp VsI s voltage divider theory R1 o V1 Vcc (R1 R 2 ) a Efficiency = Output x 100% Input 2 2 v u 2as s ut 1 at 2 2 E F A rF L L Ultimate Stress Factor of Safety Safe Working Stress 28 o P explain the operating principles of commonly encountered electrical devices in contextual applications. Nature and properties of components and types of circuits explain the purpose, operation and use of silicon controlled rectifiers state and explain how Darlington pairs [NPN transistors only] operate and the gain advantages that they exhibit state and explain how NPN or N channel MOSFET transistors can be used as amplifiers to control an output system. Systems and control Nature of control systems use industry standard terminology to interpret and describe control systems. Programming identify, explain and use industry standard programming and documentation processes. Digital control identify and explain a range of industry standard digital control systems such as PLCs and loop controllers. Logic control develop Boolean logic expressions from control scenarios and design briefs. Interfacing identify and briefly describe stepper motor use for output control identify, describe and use [through programming] servo motors as drive systems identify, describe, and control [through programming] servo motors for positional control change motor direction in control programming systems (H-bridge or motor driver EEPROM) Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 interface to serial devices including LCD displays. Actuators implement full linking and integration of final actuators to control system explain the effect of the choice of actuator on the systems performance. Assessment The three types of assessment in the table below are consistent with the teaching and learning strategies considered to be the most supportive of student achievement of the outcomes in the Engineering Studies course. The table provides details of the assessment type, examples of different ways that these assessment types can be applied and the weighting range for each assessment type. Weighting Stage 3 Type of assessment 30–40% Design Students research past, present or proposed engineering projects. Teachers assess how students conduct the investigation and communicate their findings in appropriate forms e.g. written, oral, graphical, multimedia, but the folio/journal is preferred. Types of evidence may include: observation checklists, evaluation tools (self, peer), journal, presentation of design and project proposals using a range of communication strategies. This assessment type is best suited to the collection of evidence on student achievement of Outcomes 1, 2 and 4. 20–30% Production Extended and manufacturing project(s) where students control, evaluate and manage processes as necessary. Teachers assess the students’ understandings, confidence and competence when using skills in manufacturing processes and when managing production plans. Teachers must also assess how well students test materials, components and systems safely. The made product in terms of quality and finish is also assessed. Types of evidence must include made products, journal, observation checklists and evaluation tools (self, peer), on balance judgements. This assessment type is best suited to the collection of evidence on student achievement of Outcomes 1 and 3. 40–50% Response Students apply their knowledge and skills in responding to a series of stimuli or prompts in the following formats: exam, reports/essays, oral, ICT visual response, worksheets. Types of evidence may include: observation checklists, reports/essays/worksheets, power point presentations and on-balance judgements. This assessment type is best suited to the collection of evidence on student achievement of Outcomes 2 and 4. Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 29 30 Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 Examination details Stage 2 and Stage 3 Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 31 Engineering Studies Examination design brief Stage 2 Time allowed Reading time before commencing work: Working time for paper: ten minutes three hours Permissible items Standard items: pens, pencils, eraser, correction fluid, ruler, highlighters Special items: measuring/drawing instruments, non-programmable calculators Additional information A Data Book and a Document Booklet will be provided. Section Supporting information Section One Core content 35% of the examination The candidate is required to answer all questions in this section. Part B can include both open and closed questions, each relating to a scenario or engineering design problem. The questions can have subparts that increase in complexity, allowing the candidate to demonstrate depth of knowledge across the core content. Part A 10% of the examination 10 multiple-choice questions Part B 25% of the examination Three questions with sub-parts, from a choice of four Part B questions can require answers comprising short paragraphs, calculations or diagrams. Wherever appropriate, the candidate should use examples and fully labelled sketches or diagrams to illustrate and support their responses. Suggested working time for Section One: 60 minutes Part B questions can refer to stimulus materials such as descriptive texts, diagrams, short excerpts from journal articles, screen captures, photographs or tabular information. These stimulus materials are typically presented in the Document Booklet. Section Two Specialist engineering fields 65% of the examination The candidate is required to answer both Part A and Part B questions from only one of the specialist engineering fields. Candidates choose from one of the following specialist engineering fields: Mechanical Electronic/electrical Systems and control Part B can include both open and closed questions, each relating to a scenario or engineering design problem. The questions can have subparts that increase in complexity, allowing the candidate to demonstrate depth of knowledge across their specialist engineering field. Part B questions can require answers comprising short paragraphs, calculations or diagrams. Wherever appropriate, the candidate should use examples and fully labelled sketches or diagrams to illustrate and support their responses. Each field contains: Part A 10% of the examination 10 multiple-choice questions Part B questions can refer to stimulus materials such as descriptive texts, diagrams, short excerpts from journal articles, screen captures, photographs or tabular information. These stimulus materials are typically presented in the Document Booklet. Part B 55% of the examination 3–4 questions with sub-parts Suggested working time for Section Two: 120 minutes 32 Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 Engineering Studies Examination design brief Stage 3 Time allowed Reading time before commencing work: Working time for paper: ten minutes three hours Permissible items Standard items: pens, pencils, eraser, correction fluid, ruler, highlighters Special items: measuring/drawing instruments, non-programmable calculators Additional information A Data Book and a Document Booklet will be provided. Section Supporting information Section One Core content 35% of the examination The candidate is required to answer all questions in this section. Part B can include both open and closed questions, each relating to a scenario or engineering design problem. The questions can have subparts that increase in complexity, allowing the candidate to demonstrate depth of knowledge across the core content. Part A 10% of the examination 10 multiple-choice questions Part B 25% of the examination Three questions with sub-parts, from a choice of four Part B questions can require answers comprising short paragraphs, calculations or diagrams. Wherever appropriate, the candidate should use examples and fully labelled sketches or diagrams to illustrate and support their responses. Suggested working time for Section One: 60 minutes Part B questions can refer to stimulus materials such as descriptive texts, diagrams, short excerpts from journal articles, screen captures, photographs or tabular information. These stimulus materials are typically presented in the Document Booklet. Section Two Specialist engineering fields 65% of the examination The candidate is required to answer both Part A and Part B questions from only one of the specialist engineering fields. Candidates choose from one of the following specialist engineering fields: Mechanical Electronic/electrical Systems and control Part B can include both open and closed questions, each relating to a scenario or engineering design problem. The questions can have subparts that increase in complexity, allowing the candidate to demonstrate depth of knowledge across their specialist engineering field. Part B questions can require answers comprising short paragraphs, calculations or diagrams. Wherever appropriate, the candidate should use examples and fully labelled sketches or diagrams to illustrate and support their responses. Each field contains: Part A 10% of the examination 10 multiple-choice questions Part B questions can refer to stimulus materials such as descriptive texts, diagrams, short excerpts from journal articles, screen captures, photographs or tabular information. These stimulus materials are typically presented in the Document Booklet. Part B 55% of the examination 3–4 questions with sub-parts Suggested working time for Section Two: 120 minutes Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 33 34 Engineering Studies: June 2009 (updated March 2010) For teaching 2011, examined in 2011 Appendix 1: Outcome progressions Engineering Studies: June 2009 (updated March 2010) Appendix 1 For teaching 2011, examined in 2011 Outcome progressions Outcome 1: Engineering process Students apply and communicate a process to design, make and evaluate components and systems. Level 3 Level 4 Students use a directed prioritised partial technology process to investigate a common engineering system, generate a design proposal with sketches, apply known production processes with identified variables, and reflect on plans and actions. Students use a technology process to investigate individual design needs, generate optional design proposals with graphics and common technical terms, apply given engineering techniques controlling identified variables, and consider the functionality of products. Level 5 Level 6 Level 7 Level 8 Students investigate individual design needs, generate and describe optional design proposals, organise and communicate production processes to given specifications, and examine product features suggesting improvements. Students investigate and justify design needs, generate and examine optional design proposals, implement and technologically communicate adjusted production sequences, and use criteria to compare products with those that meet similar design needs. Students investigate, analyse and justify interrelated design needs, generate detailed design proposals, manage and communicate to clients detailed production sequences, and use information from diverse sources to evaluate each project stage for continuous improvement. Students continually evaluate and justify interrelated design needs, generate industry standard design proposals, resolve production problems by optimising resource management and communicating with clients, and use extensive data to continuously evaluate for specified criteria. Students: investigate, design needs and opportunities in engineering. use a prioritised partial technology process to investigate individual design features of a common engineering system, in a given context. use a technology process to investigate individual design needs and opportunities in engineering solutions. investigate individual design needs and opportunities considering appropriateness of technologies in engineering solutions. investigate design needs and opportunities of individuals and communities, justifying the appropriateness of technologies in engineering solutions. investigate interrelationships between design needs and opportunities of communities, and their environments, and analyse and justify the appropriateness of technologies in engineering solutions. investigate interrelationships between design needs and opportunities of clients and stakeholders, evaluating and justifying the appropriateness of technologies in engineering technologies. generate engineering production proposals to solutions. use a prioritised partial technology process to generate a design proposal with sketches, and identified variables. use a technology process to generate optional design proposals, with graphical representations/models and common technical terms. generate design proposals, describing reasons for options considered and incorporating a range of graphical representations, views and appropriate technical terms. generate design proposals, examining options and incorporating graphical and technical languages specific to a particular engineering discipline. generate detailed design proposals, using technical and graphical languages, to show the evolution of ideas appropriate to needs. generate industry standard design proposals, using graphics and technical languages, appropriate to client needs. manage engineering production processes to produce solutions. use a prioritised partial technology process, applying known production processes, and working in a directed situation, to produce a solution. use a technology process to implement and technologically communicate production processes, using given engineering techniques and controlling identified variables, to produce solutions. organise and communicate production processes to given specifications, using technological engineering language and techniques, and controlling variables, to produce solutions. implement and technologically communicate using engineering languages, techniques and conventions, to adjust detailed production sequences and produce solutions. manage time and communicate with clients, using industry standard engineering languages, techniques and conventions, to implement adjusted production sequences and produce solutions. optimise resource management and communicate with clients, using engineering languages, techniques and conventions, to resolve difficulties and produce industry equivalent solutions. evaluate intentions, plans and actions. use a partial prioritised technology process to reflect on plans and actions. use a technology process to consider the functionality of products, reflecting on plans and technical processes. examine functional, aesthetic and ergonomic features of products, reflecting on improvements to plans and technical processes. examine and compare ethical criteria, final designs, and technical processes with other technologies that meet similar design needs and opportunities. prepare and present continual evaluation reports, using information from impact studies, product testing, market research and comparative studies, to implement changes throughout the project. continuously evaluate projects, comparing extensive qualitative and quantitative data with client needs and opportunities, commercial feasibility, and demands of society and environments. Engineering Studies: June 2009 (updated March 2010) Appendix 1 For teaching 2011, examined in 2011 Outcome progressions Outcome 2: Engineering understandings Students understand properties of materials and/or components, energy transfer and design principles in engineering technologies. Level 3 Level 4 Level 5 Level 6 Level 7 Level 8 Students recognise common properties of groups of materials and/or components, when energy is transferred, and prime design principles. Students understand properties of different types of materials and/or components in circuits or systems, the different ways energy is transferred, and fundamental design principles. Students understand relationships between properties and functions of materials and/or components in circuits or systems, the different ways energy is converted, and applications of design principles. Students understand the capacity to change properties of materials and/or components, circuits, or systems, the quantification of energy transfer, and prioritisation of design principles. Students understand factors that affect materials and/or components, circuits or systems, the quantification of energy conversions, and evaluation of engineering technologies, using design principles. Students understand integrated systems and subsystems, quantification of multi-staged processes in energy conservation, and the refinement of engineering technologies, using design principles. Students: understand properties of materials and/or components in engineering technologies. recognise common properties of groupings of materials and/or components in engineering technologies. understand properties of different types of materials, and/or components in circuits or systems, in engineering technologies. understand relationships between properties and functions of materials, and/or components in circuits or systems, in engineering technologies. understand the capacity to change the properties of materials and/or components, circuits or systems in engineering technologies. understand processes and/or configurations that change properties of materials and/or components, circuits or systems, to meet specifications in engineering technologies. understand the integration of systems and subsystems to achieve different and desired specifications, in engineering technologies. understand energy transfer in engineering technologies. recognise when energy is transferred through materials and/or components in engineering technologies. understand different ways energy is transferred in engineering technologies. understand different ways energy is converted in engineering technologies. understand fundamental scientific principles and mathematical relationships underpinning energy transfer in engineering technologies. understand integrated scientific principles and mathematical relationships underpinning energy conversions in engineering technologies. understand integrated complex multi-staged scientific principles and mathematical relationships underpinning conservation of energy in engineering technologies. understand design principles in engineering technologies. recognise functional and aesthetic design principles in engineering technologies. understand fundamental design principles in engineering technologies. understand different applications of design principles in engineering technologies. understand design principles are prioritised in engineering technologies. understand design principles are used to evaluate solutions in engineering technologies. understand design principles are continually used to refine engineering technologies. Engineering Studies: June 2009 (updated March 2010) Appendix 1 For teaching 2011, examined in 2011 Outcome progressions Outcome 3: Engineering technology skills Students use materials, skills and technologies appropriate to the engineering industry. Level 3 Level 4 Level 5 Students implement given plans, safely operate equipment when using traditional materials, fundamental techniques and technologies, and apply simple arithmetic skills to achieve solutions to a set challenge. Students implement plans, safely operate equipment, when using traditional materials, simple techniques and technologies, and apply stated arithmetic formula to achieve solutions to a limited range of predictable challenges. Students work cooperatively to implement plans, recognise hazards to safely operate equipment when using traditional materials, techniques and technologies, and apply dimensional arithmetic skills to achieve solutions to a range of predictable challenges. Level 6 Level 7 Level 8 Students work collaboratively, adhere to OSH standards, manage resources and techniques efficiently, and manipulate three variable formulas to resolve predictable challenges that meet given tolerances or performance standards. Students proactively make decisions, adhere to OSH regulations to minimise risk, select resources and techniques to manage contingencies, and manipulate multiple variable equations to resolve challenges that meet precise tolerances or performance standards. Students autonomously make decisions, predict potential hazards at defined points, organise resources and skills to manage contingencies, and manipulate multiple variable formulae in staged calculations to resolve diverse challenges that meet industry and commercial standards. Students: apply initiative and organisational skills. implement given plans to achieve results that meet the requirements of a set task. display initiative to implement plans and achieve results that meet the requirements of a set task. work cooperatively and individually to implement plans and achieve results that meet the requirements of their task. work collaboratively to organise resources and skills, to ensure productivity. adopt a proactive approach in making informed decisions about the selection of resources and skills to manage contingencies. demonstrate autonomy in making informed judgements about the organisation of resources and skills to manage contingencies. apply materials, techniques and technologies to achieve solutions to engineering challenges. use traditional materials, fundamental techniques and technologies, to achieve solutions to a set challenge. use traditional materials, and simple techniques and technologies, to achieve solutions to a limited range of predictable challenges. use traditional materials, techniques and technologies, to achieve solutions to a range of predictable challenges. use materials, techniques and technologies, to resolve predictable challenges that meet given tolerances or performance standards. use materials, complex techniques and technologies, to resolve challenges that meet precise tolerances or performance standards. use materials, complex techniques and technologies to resolve diverse challenges that meet industry and commercial standards. operate equipment and resources safely. operate equipment and resources with regard for their safety. operate equipment and resources with regard for the safety of themselves and others. operate equipment and resources, recognising hazards and working with regard for the safety of themselves and others. predict potential hazards to manage equipment and resources efficiently, with regard to the Occupational Safety and Health Act. predict potential hazards, then adjust complex procedures to minimise risk, with regard to the Occupational Safety and Health Act. predict potential hazards at source, the path to, and the user/receiver. apply skills of calculation and computation. apply stated, simple arithmetic in deriving linear dimensions for a given context. apply stated arithmetic formulae and simple arithmetic skills to compute an answer e.g. calculate internal area, volume. apply correct formulae and dimensional arithmetic skills to compute answers e.g. radiuses, circumferences and diameter. manipulate three variable formulae to change the subject of the formulae, and combine different units and bases to compute correct answers. manipulate multivariable equations in correct sequence with other formulae and principles, to derive answers and predictions, showing correct units and bases. manipulate multivariable formulae in staged calculations to compute correct answers e.g. simple factorisation, trigonometry, and areas of graphs. Engineering Studies: June 2009 (updated March 2010) Appendix 1 For teaching 2011, examined in 2011 Outcome progressions Outcome 4: Engineering in society Students understand the interrelationships between engineering technologies and society. Level 3 Level 4 Students understand relationships between the nature of engineering technologies, and the beliefs and values of individuals. Students understand how engineering technologies, and the beliefs and values of local communities, are interrelated. Level 5 Level 6 Level 7 Level 8 Students understand how current engineering technologies, and societal beliefs and values, are interrelated. Students understand how changes in engineering technologies, the impact of significant events on societal beliefs and values, and environmental considerations, are interrelated. Students understand how engineering technologies and trends caused by changing beliefs and values of developers and users, and environmental considerations, are interrelated. Students understand how engineering technologies, differences between beliefs and values of developers and users in global communities, and environmental considerations, are interrelated. Students: understand how engineering technologies are influenced by beliefs and values. recognise that engineering technologies are influenced by the beliefs and values of individuals. understand how engineering technologies are influenced by the beliefs and values of local communities. understand how current engineering technologies are influenced by societal beliefs and values. understand how changes in engineering technologies are driven by the impact of significant events on societal beliefs and values, and environmental considerations. understand how engineering technologies are driven by trends caused by changing beliefs and values of developers and users, and environmental considerations. understand how engineering technologies are driven by differences between the beliefs and values of developers and users in global communities, and environmental considerations. understand beliefs and values are shaped by engineering technologies. recognise that beliefs and values of individuals are shaped by engineering technologies. understand how beliefs and values of local communities are shaped by engineering technologies. understand how societal beliefs and values are shaped by current engineering technologies. understand how societal beliefs and values, and environments, are shaped by the impact of significant events on engineering technologies. understand how changing beliefs and values of developers and users, and environmental considerations, are shaped by trends in engineering technologies. understand how differences between the beliefs and values of their developers and users in global communities, and environmental considerations, are shaped by engineering technologies. Engineering Studies: June 2009 (updated March 2010) Appendix 1 For teaching 2011, examined in 2011