Bar Model:
It is used in elementary teaching , for solving problems of addition, subtraction, Multiplication and Division by using various tools such as rectangles, squares or any polygons .
1. Addition
4 + 2
Draw Four rectangles of same Dimension and two squares of same dimension .Dimension can be different also. Ask the children how many shapes are in all.
2. Subtraction
6-4
Draw Six Rectangles of same Dimension.Color four of them in a single color and two of them in different color . Now in another picture keep only 4 rectangles having same color and keep the two rectangles apart .Ask the children how many rectangles are differently colored.
