Equivalent Expressions  Area and Perimeter lesson
Forming expressions for area and perimeter and simplifying to show equivalence. There is a great deal of scope for differentiation here, with two activities which take the idea further (The last one is not my own, but from a resource called 'Materials to Support able mathematicians in KS3&') Includes application of trigonometry ratios in finding the general rule for areas of regular polygons.
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This is great thanks! As a slight niggle for shape 5 e must be 3 as 4+2e =10, then stating that the area is 24 is confusing, I changed the question to "can you find the area?". Thankyou for sharing.

Great resource, thank you for sharing.

I adapted this lesson for able year 7s. It was excellent. Than you.

A brilliant resource, a great thinking skills lesson! I love it!