This has become a HOT topic with the new 9-1 GCSE specification as well as a popular question for IGCSE. 17 slides + resources.
This lesson includes:
+ learning objectives (differentiated)
+ superb teaching slides on how to solve these problems one step at a time
+ lots of excellent examples
+ MWB activities
+ differentiated worksheets with answers
+ plenary (self assessment form for the whole of percentages)
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