Education Technology

Dividing Up The Area

Published on 08/26/2010

Activity Overview

In this activity, students investigate the relationship between the area of quadrilaterals and triangles using the Geoboard application. As an extension, students will find the area of a complex figure.

Key Steps

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    Students will use the Geoboard app to compare the areas of squares and rectangles to the area of the triangles that divide each of them. They are to determine a formula for the area of a triangle based on what they know about the formula of a rectangle.

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    Then students will compare parallelograms and rectangles that have the same area to determine the relationship between the two quadrilaterals.

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    As an extension, students will use what they have learned in the activity to find the area of complex figures.