__Teaching And Learning Materials To Use For The Teaching__1) Circular Cut-out

2) Thread

3) Knife

4) Paint

__INTRODUCTION__Make sure the child knows how to find the area of a rectangle.

__ACTIVITIES____Activity 1__

Guide the child to measure the circumference of the circular cut-out.

Definition of Circumference: circumference of a circle is the distance around a circle.

**Diameter(d) = 2r**where

**r**is the radius.

__Activity 2__

Let the child devide the circumference by the diameter to get

**pi( Ï€ )**. That's,

**Ï€=C/d**

__Activity 3__

Discuss the ratio

**Ï€=C/d**with the child.

__Activity 4__

Guide the child to write this as

**C = Ï€d = 2Ï€r**

__Activity 5__

Guide the child to draw on a piece of paper a circle with radius say

**4cm.**

__Activity 6__

Guide the child to cut and devide it into sixteen(16) equal parts. Number the parts from one(1) to sixteen(16)

Color or shade eight(8) parts.

__Activity 7__

Assist the child to establish the fact that the length of the curved of the semi-circle is

**2Ï€r/2 = Ï€r**

__Activity 8__

Guide the child to arrange the Coloured and non-coloured sectors to form a rectangle.

__Activity 9__

The child finds an approximate expression for length as

**Ï€r**and approximate expression for the breath as

**r**

__Activity 10__

Guide the child to apply the formula of the area of a rectangle as

**A=LxB**(where L is lenght and Breath or the Width) and relate this to the area of a circle.

**A = Ï€r x r**

__Activity 11__

The child simplifies this to get

__CONCLUSION__Let the child repeat the activity without your interference.

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