AQA GCSE Geography lesson for the 2016 specification Unit 1B: In this lesson we look at how at ecosystems can be altered by human and physical forces and how the loss or reintroduction of one species affects and ecosystem.
We start with a retrieval practice multiple choice task based around the content already learned in the rainforest section of the unit. the students then complete a cloze exercise introducing how ecosystems can be altered in the short-term and long-term. We then look at some examples of changes to ecosystems caused by either human or physical forces, the students have to categorise these examples. We then look at an example food web and pose the hypothetical question ‘what would happen if beetles were removed?’ the students highlight all species that would be affected and explain how. We then look at the reintroduction of wolves to Yellowstone National Park. After a brief introduction where the students locate Yellowstone, we watch a video clip with questions on the topic. The students are then provided with a flow chart showing the short-term and longer-term impacts of the reintroduction. The students have a series of questions to answer using the chart. We then tackle a six mark question where there is a writing frame and some guidance on points to use in their answers,
Hope this saves you some valuable planning time.
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