Materials Matter 11 th Grade Engineering Module Overview Topic: Materials Grade Level: 11th Course: Engineering - High School Time Allotted for Module: 30 days Prior Knowledge: Familiarity with computer spreadsheets and how to graph data. Overview This module will introduce students to the world of materials. The students will first encounter the basic properties and characteristics of materials and how to categorize them, moving on to examine mechanical, and thermal, properties, including how to measure these properties using different methods. The students will then be introduced to metals, ceramics and polymers – the different types, uses, their properties and characteristics, and how to measure them. Students will design their own metallic Mars rover, learn how to write a technical brief, and use their knowledge to prepare a brief for a NASA application. Vocabulary Ceramics: Ceramics are nonorganic, non-metallic solids prepared by the action of heat and subsequent cooling. Ceramic materials may have a crystalline or partly crystalline structure, or may be amorphous (e.g., a glass). Because most common ceramics are crystalline, the definition of ceramic is often restricted to inorganic crystalline materials, as opposed to the non-crystalline glasses. Deformation, Elastic: Occurs when a material is strained (deformed) but returns to its original shape, like a rubber band Deformation, Plastic: Occurs when a material is strained (deformed) beyond its yield strength and does not return to its original shape, like silly putty Fatigue Strength: The maximum amount of stress a material can take one million times without breaking Flexure: A form of bending, flexure characterizes the behavior of a slender structural element subjected to an external load applied perpendicularly to an longitudinal axis of the element. Polymer: A polymer is a large molecule (macromolecule) composed of repeating structural units typically connected by covalent chemical bonds. Strain: The percent amount of elongation or compression of a material Stress: The amount of force applied over the area of an object, computed by dividing force by area Stress, Comprehensive: Stress that squeezes a material together 11th Grade Engineering Module Overview - Page 1 Tensile Stress: Stress that pulls a material apart Tension: The magnitude of the pulling force exerted by a string, cable, chain, or similar object on another object Ultimate Tensile Strength: The maximum amount of tensile stress a material can take before breaking Yield Strength: The maximum amount of stress a material can take before it deforms plastically (permanently) Materials DAY 1-2 Computer Household items: Plastics (polymer recycling codes 1-7) Metals (aluminum, iron, etc.) Glass (bottles and jars) Compounds (salt, sugar, baking soda, etc.) Solutions (colored flavor, drinks, tea, coffee, etc.) Variety of materials that are heterogeneous (granite, rocks, wood, etc.) DAY 3 Computer with Internet Eight labels Seven vials with caps, filled with the following: - Iron filings - Sulfur rolls - Mossy zinc - Graphite (replacement leads for mechanical pencils work well) - Silicon - Mossy tin - Carbon (If the above materials are not available, some substitutes are: paper clips, beebees, nails, fishing weights, charcoal) One dropper bottle 6M Hydrochloric acid One hammer Eight pieces of paper each measuring approximately 3.5 × 5 inches A conductivity apparatus such as 9-volt battery, a small appliance light bulb, and three pieces of insulated copper wire to make an open circuit (the circuit will be closed with each of the seven samples) One test tube holder Seven test tubes Every student should have the following: Safety goggles A copy of Properties worksheet.pdf DAY 4-6 Computer with Internet Store-bought Silly Putty® and Slime® (to be used for examination and discussion) Student worksheet: Scavenger Hunt I Student Worksheet: Scavenger Hunt 2 DAY 7 Computer Materials Properties worksheet Object from home Post-it ®note chart paper Markers DAY 8-11 Computer Polymer clay Bucket Piece of metal (Aluminum) Piece of plastic Piece of wood Weights Scale Wooden base (6" x 1" x 2') PVC plastic water pipe (3/4" x 10') Pipe elbows (2 pcs) Pipe flanges (1 pc) 11th Grade Engineering Module Overview - Page 2 Screws for flange Bell wire Large eye screw Electronic project box On/off switch Pilot light Push button switch 6 Volt battery holder Wooden block (1" x 6" x 6") Center punch Screwdriver Meter stick Test materials Tape or pins Steel file "Guide to Common Minerals" Hand lens 5 Mineral samples Copper penny Glass square Streak plate DAY 12-28 Computer with Internet access Science Standards Nature of Science, Standard 1: Practice of Science SC.912.N.1.1 Define a problem based on a specific body of knowledge, for example: biology, chemistry, physics, and earth/space science, and do the following: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. pose questions about the natural world, conduct systematic observations, examine books and other sources of information to see what is already known, review what is known in light of empirical evidence, plan investigations, use tools to gather, analyze, and interpret data (this includes the use of measurement in metric and other systems, and also the generation and interpretation of graphical representations of data, including data tables and graphs), pose answers, explanations, or descriptions of events, generate explanations that explicate or describe natural phenomena (inferences), use appropriate evidence and reasoning to justify these explanations to others, communicate results of scientific investigations, and evaluate the merits of the explanations produced by others Nature of Science, Standard 4: Science & Society SC.912.N.4.2 Weigh the merits of alternative strategies for solving a specific societal problem by comparing a number of different costs and benefits, such as human, economic, and environmental. Physical Science, Standard 8: Matter SC.912.P.8.1 Differentiate among the four states of matter. SC.912.P.8.2 Differentiate between physical and chemical properties and physical and chemical changes of matter. 11th Grade Engineering Module Overview - Page 3 SC.912.P.8.7 Interpret formula representations of molecules and compounds in terms of composition and structure. Math Standards Algebra, Standard 1: Real and Complex Number Systems MA.912.A.1.4 Perform operations on real numbers (including integer exponents, radicals, percents, scientific notation, absolute value, rational numbers, irrational numbers) using multistep and real-world problems. Algebra, Standard 2: Relations and Functions MA.912.A.2.13 Solve real-world problems involving relations and functions. Algebra, Standard 10: Mathematical Reasoning and Problem Solving MA.912.A.10.1 Use a variety of problem-solving strategies, such as drawing a diagram, making a chart, guessing- and-checking, solving a simpler problem, writing an equation, working backwards, and creating a table. MA.912.A.10.2 Decide whether a solution is reasonable in the context of the original situation. MA.912.A.10.4 Use counterexamples to show that statements are false. Statistics, Standard 1: Formulating Questions MA.912.S.1.1 Formulate an appropriate research question to be answered by collecting data or performing an experiment. References ALEX Lesson Plan.pdf http://alex.state.al.us/lesson_view.php?id=7676 Breaking Beams Lesson Plan http://www.teachengineering.org/view_activity.php?url=http://www.teachengineering.org/collection /cub_/activities/cub_mechanics/cub_mechanics_lesson07_activity1.xml Classification_of_matter_lab.pdf (To be used as a review, if needed) http://www.agpa.uakron.edu/p16/lessons/pdf/classification_print.pdf Demoworks.pdf http://www.strangematterexhibit.com/demoworks_final.pdf DesignBriefTips.pdf http://www.technologystudent.com/designpro/despro1.htm DesignProcess.pdf http://www.technologystudent.com/designpro/despro1.htm DesignProjCheckoff.pdf http://www.technologystudent.com/ 11th Grade Engineering Module Overview - Page 4 Green Spinoffs from NASA http://www.nasa.gov/centers/ames/greenspace/spinoffs.html Historic Solar Sail Deployment.pdf http://science.nasa.gov/science-news/science-at-nasa/2008/26jun_nanosaild How to write a technical brief.pdf http://www.ehow.com/how_2146091_write-technical-brief.html Impact resistance.pdf part of Suited for Spacewalking Materials Comparison WS.pdf (teacher-created based on information from the www.strangematterexhibit.com website) MaterialCostAnalysis.pdf Dr Muhammad Al Salamah, Industrial Engineering, KFUPM http://faculty.kfupm.edu.sa/SE/salamah/industrial_costing/material_cost_analysis.pdf Materials Matter.pdf (teacher-created based on information from the www.strangematterexhibit.com website) Materials Matter Properties.pdf (teacher-created based on information from the www.strangematterexhibit.com website) Matter Activity http://www.strangematterexhibit.com/properties.html Metals and Nonmetals Lesson Plan.pdf http://school.discoveryeducation.com/lessonplans/programs/metalsandnonmetals/ Mohs Scale Lab.pdf (source to be identified) On Line Book Chapter 1: Magnetism http://scitoys.com/scitoys/scitoys/magnets/magnets.html Plastics.pdf www.tryengineering.org “A Century of Plastics” Pre-Presentation Worksheet.pdf teacher-created Presentation Rubric.pdf teacher-created Properties of Mars Worksheet.pdf teacher-created Properties of Materials Worksheet.pdf teacher-created Properties worksheet.pdf http://school.discoveryeducation.com/lessonplans/worksheets/metalsandnonmetals/worksheet1.htm l Scavenger hunt.pdf for use with http://pslc.ws/macrog/maindir.htm 11th Grade Engineering Module Overview - Page 5 Scavenger Hunt2.pdf for use with http://pslc.ws/macrog/maindir.htm Solar Sails.pdf http://www.nasa.gov/vision/universe/roboticexplorers/solar_sails.html Strange Matter.pdf http://www.strangematterexhibit.com/whatis.html Strange Matter Website WS.pdf (teacher-created based on information from the www.strangematterexhibit.com website) StrangeMatterTeachersGuide.pdf http://www.strangematterexhibit.com/teachersguide.pdf Streak Test Data Sheet.pdf (teacher-created based on information from the www.strangematterexhibit.com website) Stressed and Strained Lesson Plan http://www.teachengineering.org/view_lesson.php?url=http://www.teachengineering.org/collection/ cub_/lessons/cub_mechanics/cub_mechanics_lesson07.xml Suited for Spacewalking.pdf http://www.nasa.gov/pdf/143159main_Suited_for_Spacewalking.pdf Teacher Resource Chapter6.pdf http://www.virginia.edu/bohr/mse209/chapter6.htm Temperature_of_Space.pdf www.nasa.gov Tensile strength test.pdf part of Suited for Spacewalking The Macrogalleria.pdf http://pslc.ws/macrog/maindir.htm The Macrogalleria website http://pslc.ws/mactest/index.htm Venn Diagram.pdf teacher-created 11th Grade Engineering Module Overview - Page 6