• Ask learners to answer the questions to this activity in their workbooks. Background knowledge
A food chain depicts the order of who eats what. A food web shows how food chains link together in an ecosystem.
Suggested answers 1.1 grass → impala → leopard
1.2 grass → locust → baboon → leopard 1.3 grass → mouse → snake → meerkat → eagle
(3) (4) (5)
2 plankton → crabs → crayfish → large fish → killer whale (5) 3 The learner must include at least two food chains in their food web.
(2) Total: 19 marks Assessment guidelines
• This activity is intended for informal assessment. • Use the suggested answers supplied above to assess learners informally. Allocate learners a mark out of 19 and give them feedback on their performance to prepare them for formal assessment.
Remediation/Remedial activity Give learners another food web to study and pick out different food chains. Activity 3
Identify a food chain or food web in a school ground’s ecosystem
Learner’s Book page 33 Guidelines to implement this activity
• This is a pair activity. • Read through the instructions to this activity with the class and then take them outside into the school grounds to select an area for observation.
• Spread pairs out so their chosen areas do not overlap. • Ask them to make notes, sketches and take photographs to compile their food web or chain.
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