All About Circles

Summary
The lesson builds upon the children?s prior knowledge of circles and introduces them to the different parts of a circle and the terminology used. The reading is designed to be used by the children themselves, individually or in pairs.

Objectives
• The children will be able to describe the construction of a circle.

• The children will be able to demonstrate their understanding of the parts of a circle, using the correct terminology.

Suggested Grades
3rd Grade
4th Grade
5th Grade

Excerpt
To start with, did you know that one of the definitions of a circle is a closed curve in a plane? A plane just means a flat surface. The plane itself is not part of the circle. So, for example, it is wrong to call a dinner plate a circle. The dinner plate is a disc, the outer edge of the plate is a circle. The distance around the circle is called its circumference.

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