Use AQA Teachit KS4: Predator, Prey and Populations to demonstrate interdependence. O4 and recycling Recall that decay is a stage in the food chain/web process. Explain that microorganisms are responsible for decay and return carbon to the atmosphere to be used by plants in photosynthesis. 2 (plus time for TDA task(s) results) Use scientific vocabulary correctly. Time lapse film of decaying fruit: list ways in which decay could be slowed/avoided. Complete the Carbon Cycle jigsaw TDA opportunity: Investigating the temperature change as grass clippings decay. TDA opportunity: Investigate the conditions in which bread goes mouldy.
3.4.5 O10 dioxide which can cause acid rain. Recall that landfill and toxic chemicals such as pesticides and herbicides contribute to land and water pollution. Describe how rapid human population growth leads to more resource use and more waste. discussion about what humans need to do to reduce their impact on the environment. Compare images of pollution around the and match the cause with the result. Role play activity where some students are big business and others are environmentalists trying to prevent pollution in an area eg Limestone enquiry role-play TDA opportunity: Compare water samples from the inner city and the countryside. TDA opportunity: Compare the quality of water from different sources eg running and still water 3.2.3 O8 Evolution, natural and artificial selection Recall Darwin’s theory that all living things evolved from simple life forms. Describe how the fossil record is evidence for this. 2 Use scientific vocabulary correctly. Brainstorm about Darwin and evolution then watch film clip
Describe how fossils form. Recall that in natural selection, individuals with characteristics most suited to their environment are most likely to survive and breed. Recall that artificial selection is the process by which humans breed plants and animals for particular traits. Examine and discuss a selection of fossils and pictures of fossils. Use horse evolution power point to compare features of ancient and modern forms. Use AQA Teachit KS4: Beak Shape to carry out the beak shapes investigation Produce a mock newspaper article to describe the changes in population of the peppered moth. Produce an information leaflet about the pros and cons of selective breeding. Images of different dogs. Students ‘breed’ and name a Make fossil casts from plaster of Paris Distribute coloured/ camouflaged ‘butterflies’ around classroom to demonstrate adaptation/mutation and survival. Research the distribution of the peppered moth and write about it. Research selective breeding of eg cattle or food plants.
Describe examples of animals and plants artificially selected for requirements. new dog from selecting any 2 – draw a picture of their new breed. Debate: Should people artificially select which animals/plants can breed? O9 Sexual and asexual reproduction Recall that sexual reproduction involves the joining of male and female sex cells. Recall that sexual reproduction involves the mixing of genetic information and so variation in the offspring. Recall that asexual reproduction involves only one parent. Recall that, in asexual reproduction, there is only one set of genetic information. Recall that these identical offspring are called clones. 2 Compare the details of fertilisation versus plant fertilisation (discussion/table) Produce table to compare sexual and asexual reproduction. Discuss advantages of asexual reproduction in producing crops eg potatoes. Produce new plants asexually by leaf or stem cuttings/ runners/bulbs etc. Microscope observations of yeast budding/amoeba splitting.
Recall that in genetic engineering, genes can be cut from chromosomes and transferred into the cells of other organisms. Recognise that there are risks and benefits in genetic engineering. Debate/produce poster to show arguments for and against use of genetic engineering. Use AQA Teachit KS3: Reproduction and inheritance – question hunt to consolidate understanding. Research the use of genetic engineering in treatment of diabetes and cystic fibrosis.