YEAR 10 SCIENCE BIOLOGICAL SCIENCE Year 10 Level Description The Science Inquiry Skills and Science as a Human Endeavour strands are described across a two-year band. In their planning, schools and teachers refer to the expectations outlined in the Achievement Standard and also to the content of the Science Understanding strand for the relevant year level to ensure that these two strands are addressed over the two-year period. The three strands of the curriculum are interrelated and their content should be taught in an integrated way. The order and detail in which the content descriptions are organised into teaching/learning programs are decisions to be made by the teacher. In the Year 10 curriculum students explore systems at different scales and connect microscopic and macroscopic properties to explain phenomena. Students explore the biological, chemical, geological and physical evidence for different theories, such as the theories of natural selection and the Big Bang. Atomic theory is developed to understand relationships within the periodic table. Understanding motion and forces are related by applying physical laws. Relationships between aspects of the living, physical and chemical world are applied to systems on a local and global scale and this enables students to predict how changes will affect equilibrium within these systems. Year 10 Content Description Science Understanding Biological sciences Science as a Human Endeavour Nature and development of science The transmission of heritable characteristics from one generation to the next involves DNA and genes (ACSSU184) Scientific understanding, including models and theories, are contestable and are refined over time through a process of review by the scientific community (ACSHE191) The theory of evolution by natural selection explains the diversity of living things and is supported by a range of scientific evidence (ACSSU185) Advances in scientific understanding often rely on developments in technology and technological advances are often linked to scientific discoveries (ACSHE192) Use and influence of science People can use scientific knowledge to evaluate whether they should accept claims, explanations or predictions (ACSHE194) Advances in science and emerging sciences and technologies can significantly affect people’s lives, including generating new career opportunities (ACSHE195) The values and needs of contemporary society can influence the focus of scientific research (ACSHE230) Science Inquiry Skills Questioning and predicting Formulate questions or hypotheses that can be investigated scientifically (ACSIS198) Processing and analysing data and information Analyse patterns and trends in data, including describing relationships between variables and identifying inconsistencies (ACSIS203) and describe specific ways to improve the quality of the data (ACSIS205) Critically analyse the validity of information in secondary sources and evaluate the approaches used to solve problems (ACSIS206) Communicating Planning and conducting Plan, select and use appropriate investigation methods, including field work and laboratory experimentation, to collect reliable data; assess risk and address ethical issues associated with these methods (ACSIS199) Use knowledge of scientific concepts to draw conclusions that are consistent with evidence (ACSIS204) Select and use appropriate equipment, including digital technologies, to systematically and accurately collect and record data (ACSIS200) Evaluate conclusions, including identifying sources of uncertainty and possible alternative explanations, Evaluating Communicate scientific ideas and information for a particular purpose, including constructing evidencebased arguments and using appropriate scientific language, conventions and representations (ACSIS208) Outcomes: 1. Outline processes involved in natural selection and describe biodiversity as a function of evolution. 2. Investigate the changes caused by natural selection in a population and describe the relationship between genetic characteristics, survival and reproduction. 3. Evaluate and interpret evidence for evolution (including, fossil records, chemical and anatomical similarities and geographical distribution). 4. Discuss the role of different sources of evidence for evolution by natural selection, including biochemical, anatomical and fossil evidence. Week Content/Activity 1 Revision quiz testing the knowledge retained from semester 1. CHANGES Fossils and evolution OVER GENERATIONS Examine the evolution of the horse. Find fossil evidence from the chapter to support the idea that the horse had evolved over time. Define: evolution and generation. Resources and Experiments Pearson Science Text 10 Chapter 3 ‘Natural selection and evolution’. p. 69. Assessment and Homework Unit review 3.1 RQ 1 -15 p. 76 Pearson Activity Book 3.1 ‘Vertebrate Limbs’ Pearson Activity book 3.2 ‘Artificial selection’ Practical activity 3.2 Signs in the skeletons p.77 Structure and relationships Theory – That organisms that exhibited the same characteristic must be related at some point. Relate this back to their study of genetics in semester 1. Homologous & analogous structures – Compare and contrast these structures. Define these terms. Find examples of each. Artificial Selection & Selective breeding. Compare and contrast. Give an example and explain how certain organisms have been changed via these methods. Students should know that when organisms adapt to an environment, not every feature is an adaption, though the adaptions are for the benefit of it. 2 NATURAL SELECTION Darwin & Natural Selection Examine Darwin’s theory of natural selection. Students define natural selection and explain how the desired features are ‘chosen’ and passed onto the next generation. Define selective agent & introduce the idea of ‘survival of the fittest’ – only those characteristics that will help the organism to survive are more likely to be passed on. Variation – Natural selection can only act if Pearson Science Text 10 Chapter 3.1 ‘Natural selection. p. 78. Pearson activity sheet: Chapter 3 ‘Natural Selection and Evolution’ Practical activity 3.3 Natural selection modelled p. 84. Pearson Activity book 3.4 ‘Natural selection Unit review 3.2 Q1-14 p. 83 variation is involved (Darwin’s theory). Students must use prior knowledge about genes to explain how variation in characteristics can be passed on. Complete experiment. of snails’ Genetics and natural selection Pearson Activity book 342 ‘combating bacterial resistance’ Evidence for natural selection – Henry Bernard Kettlewell’s study of the peppered moth. Examine his study and explain his findings. Natural selection in insects & bacteria – Examine the resistance that insects developed to insecticides and research the mechanisms that allowed insects to become resistant. Examine the resistance that bacteria developed to antibiotics and research the mechanisms that allows bacteria to become resistant. Pearson Activity book 3.5 ‘Comparing eyes’ Pearson Online – Student resource 3.2 Interactive activity ‘Penguin adaptations’ http://www.pearsonplaces.com.au/asset_view er.aspx?a=-KfL0Vxduew%3d . p. 79 in the online text, click on the resource button. Natural selection practical – Candy dish selection http://www.ucmp.berkeley.edu/education/less ons/candy_dish.html Natural selection practical – Beans http://chem.lapeer.org/Bio1Docs/BeanLabEv olution.html Additional activities http://peer.tamu.edu/curriculum_modules/Eco systems/module_1/activity.htm 3 SPECIATION AND EVOLUTION Evolution The theory of evolution by natural selection proposes that all species are related. Examine some of Darwin’s research into evolution. Interactive peppered moths website http://www.techapps.net/interactives/pepperM oths.swf Pearson Science Text 10 Chapter 3.3 ‘Speciation and evolution’ p. 85 Vertebrate fossil history Interactive activity http://www.pearsonplaces.com.au/asset_view er.aspx?a=5Gq4dFjA3pY%3d p. 85 of online text. Moving from water to land – Land vertebrates & Exercise 2.2 Dinosaurs and extinction. Validation – Natural selection. Use Darwin’s book ‘on the origins of species’ to make up part of the task. Bacteria and insect resistance and how natural selection allowed these to become resistant. http://www.gutenberg.org/file the evidence to prove they existed. Birds & humans and the evidence associated with them. Species Define species and speciation and identify the steps involved in speciation that allow new species to evolve. Pearson Activity book 3.6 ‘Bipedalism’ s/1228/1228-h/1228h.htm#link2H_4_0006 Watch: David Attenborough’s Rise of the animals, Triumph of the vertebrates. Complete worksheet, highlights the evidence for the evolution of vertebrates. Evidence for evolution Students summarise the evidence for evolution (using the textbook) with examples. Including; Fossils, Comparative anatomy, DNA, protein structure, distribution of species & embryology. 4 HUMAN EVOLUTION Humans and apes Briefly compare structures between humans and apes. Students create a brief timeline/scale/flow chart of human evolution using information from the text. Students must examine the evidence and decide the ancestral line of modern humans. A brief description should be included. Students should also b aware that these groups may have evolved at the same time, rather than one at a time. Australopithecine (A. Afarensis) Homo ergaster/erectus Homo rudolfensis Homo neandethalensis Homo heifelbergensis Homo sapien Out of Africa Students examine and explain the Out of Africa Model and give evidence and reasons to support this theory of how the earth was populated from the first humans in Africa. Pearson Science Text 10 Chapter 3.4 ‘Human evolution’p.93 Skull comparison Practical Video: http://www.pearsonplaces.com.au/PORTALS /0/assets/science/uc_b4_l079_05_01a.mp4 Practical activity 3.4.1 Hand adaptation p.98 Practical activity 3.4.2 Foot adaptations p.99 Unit review 3.4 Q 1 – 17 p.97 Signs of the skulls Students compare the skulls of some of the above and describe the apparent changes between them. 5 FOSSILS AND DATING TECHNIQUES Pearson Science Text 10 Chapter 2.1 ‘Fossils’ p. 39 Fossils What they are and their formation – Students define fossils and explain the use of them. Outline the 4 steps in fossil formation (interactive). Types of fossils – Are due to the ways in which they form. 4 classifications of fossils, students summarise and compare and contrast; original fossils, replacement fossils, carbon film fossils, indirect fossils. Preserving environments Students examine the different methods in which fossils can form from the environment. Including; Peat, tar, permafrost, amber & dry air. Dating techniques 1. 2. Relative dating (estimated time period of when the rock/fossil was formed) – Layer by layer and index fossils. Stratigraphy – students use stratigraphy to determine location and age of fossils. Fluorine dating & the Piltdown man. Absolute dating (give an actual age of the rock or fossil) – radioactive dating/half life. Students practice calculating half-life. (worked example p.51) Tree ring dating. Interactive fossil formation http://www.pearsonplaces.com.au/asset_view er.aspx?a=qXZObPxUK5Q= Practical activity 2.1.1 Making fossils p. 47 Practical activity 2.1.2 modelling fossils p. 47 Pearson Science Text 10 Chapter 2.2 ‘Dating techniques’ p. 48 Half-life questions http://www.chemteam.info/Radioactivity/WSRadioactivity2.html Unit review 2.1 Q 1-18 p.46. Unit review 2.2 Q 1 -12, 14 & 15 p.53 6 GEOLOGICAL TIME SCALE 7 Sequence ordering events activity as an introductory exercise to the topic. Time scale – Precambrian, Palaeozoic, Mosozoic, Cenozoic time periods, summarise these time periods and identify some main events that occurred at this time. Sequencing in order events http://edu.environmentalatlas.ae/downloads/ Worksheet_Geological_Time.pdf Unit review 2.3 Q1 – 10 p.63 Interactive game ‘A history of life on earth’ http://www.pearsonplaces.com.au/asset_view er.aspx?a=HFocjuUDd28%3d Test revision Topic test Assessment Outline ASSESSMENT TYPE TITLE WORTH Validation test Natural selection 8% Topic test Topic test 12%