Chord of a circle

Chords of a circle are of different sizes.The length of the chord increases as it moves closer to the centre and decreases as it moves away from the center.

Objectives

 * 1) The chord is a line segment joining any two distinct points on the circle
 * 2) The longest chord in any circle is its diameter.
 * 3) Any number of chords can be drawn in a circle.

Estimated Time
20 minutes.

Prerequisites/Instructions, prior preparations, if any
The students should have the knowledge of circle, diameter, circumference and line segment.

Instruct the children to get cut circles ready:

Materials/ Resources needed
Non digital: Circles cut from white paper, colour pencils, scale.

Process (How to do the activity)

 * 1) Fold the circle at different points and try to form the smallest and biggest chords.
 * 2) What is the difference between the chord and diameter.
 * Evaluation:
 * 1) Observe to see if the children are able to fold and mark the chord accurately.
 * 2) Name the chord that passes through the center of the circle.
 * 3) What happens to the length of the chord as it moves away from the centre?

Worksheet
File:Circles Worksheet-Chords.odt