Education Technology

Exploring the Area of a Circle

Published on 03/02/2011

Activity Overview

Students explore the relationship between the area and radius of a circle.

Key Steps

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    Students investigate the area of a circle by creating a scatterplot for the radius and area data of a circle.

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    Students graph the values captured and stored in the spreadsheet. They then graph y = x² and transform it to fit their data.

    Students then find the equation of the parabola. They will see it as y = 3.14(x)2. Students then find the quadratic regression to verify their equation.

    At the end of this activity, students will be able to verify the circumference and area formulas for a circle using technology.