Teaching guidelines
• Have a brainstorming session in the class to find out what food chains are. • Suggest that they too are part of a food chain to open up the discussion.
TIP! Write a food chain on the board showing where learners are situated in the chain. Background knowledge
A food chain always begins with the Sun and ends with decomposers. Each stage in a food chain is called a trophic level.
Activity 1 Draw and analyse energy pyramids Learner’s Book page 31 Guidelines to implement this activity
• This is an individual activity. • Ask learners to copy the energy pyramid and write the answers in their workbooks.
Suggested answers 1 and 3 Check that the learner has drawn the food pyramids, put in the correct number of levels, and labelled each level of the pyramid.
2 Each time energy is transferred from one trophic level to the next, some energy is lost.
Assessment guidelines
• This activity is intended for informal assessment. • Use the memorandum supplied above to assess learners informally. Allocate learners a mark out of 5 and give them feedback on their performance to prepare them for formal assessment.
Activity 2 Write and draw food chains and food webs Learner’s Book page 33
Guidelines to implement this activity • This is an individual activity.
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(4) (1) Total: 5 marks
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