Previous Topic	Term    : 1        Exploring whole numbers ( Number Operations & Number Theory ) Module : 1 - Measuring When It Matters  Unit 2      :  Making Estimates Of Area And Perimeter                                            Estimations -  working with various shapes
	Estimation of the area of a shape or surface enclosed within a shape can be done by counting the squares enclosed if the shape is presented on a grid as shown above. The procedure is to first count all the complete squares within the shape. Squares which are not completely enclosed are counted separately and this total is divided by two, then added to the total of completely enclosed squares. Another way of handling incomplete squares, is to count the incomplete square as one if it is more than half, but zero if it is less than half.
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