Maths: Understanding and calculating perimeter (3 lessons)

This resource consists of three sequential lessons focusing on the understanding of perimeter. Suitable for KS2 (previously used in Y3 & Y4 but easily adaptable to extend higher year groups), it consists of a lesson notebook for all three days, differentiated worksheets for the first objective and a further worksheet for the second objective.

The objectives and criteria for all three days are:
L.I.: To understand perimeter
Success Criteria
* I know perimeter is the distance around the outside of a shape
* I know perimeter is a measurement of length
* I know perimeter can be measured in mm, cm or m
* I know we need to use addition to calculate perimeter

L.I.: To be able to calculate perimeter
Success Criteria
* I know perimeter is the distance around the outside of a shape
* I know perimeter is a measurement of length
* I can count squares around a shape to calculate perimeter
Challenge: I can add the sides of a shape to calculate perimeter

L.I.: To be able to solve problems involving perimeter
Success Criteria
* I can read the question carefully and identify key words
* I know perimeter is the distance around the outside of a shape
* I can add the sides of a shape to calculate perimeter
* I can include the unit of measurement in my answer