Irregular area (counting and estimating)

A KS3/Foundation KS4 worksheet activity on finding areas of irregular shapes by counting and estimating.

This is an Excel document with 4 pages.

Page 1 is a worksheet which has 4 exercises:

• Exercise 1: finding the area of shapes made from squares.
• Exercise 2: finding the perimeter of shapes made from squares.
• Exercise 3: questions increasing in difficulty in which students find the area of shapes made from squares and parts of squares
• Exercise 4: students are given an answer and are asked to explain why. 

Page 3 is a worksheet with an exercise on finding the area of an irregular shape drawn on a square grid.

Pages 2 and 4 have worked solutions.