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Lesson 3 - Perimeter of rectilinear shapes - diving into mastery

This lesson revises how to measure the perimeter of a rectilinear shape. Read through the powerpoint and then have a go at the activity sheet. On the powerpoint, there is a reference to the submarine symbols, they are like challenges. Think of them like this:

Diving = Challenge 1

Deeper = Challenge 2

Deepest = Challenge 3


Depending how you feel after the previous lessons and after reading through the powerpoint, pick the challenge that you think suits your needs and then have a go at just that activity sheet. No need to do them all!