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Understands that when the size of a linear shape changes by some factor, its area and volume change disproportionately: area changes in proportion to the square of the factor, and volume changes in proportion to the cube of the factor.

Estimating Planar Areas Using Analogue Methods

A method to estimate planar areas for simple or complex shapes is described. The method relies on the use of weighing the area of interest and using proportional constructs.

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