quadrilateral. Square, rectangle, rhombus, parallelogram and trapezium are some of
the quadrilaterals. Shapes of these quadrilaterals can be given to the child and he/
she be asked to explore the shape of the same.
Related concepts such as, the sum of the angles in a quadrilateral is 360o can also be
explained simultaneously.
In addition to oral explanation of the idea, provide the child with the different
quadrilaterals made out of paper or plastic. On exploration, the child will be able to
understand the nature of the various types of quadrilaterals and also understand the
similarities and differences between each of them.
- Length/Width
In a rectangle the longer side is always the length and the shorter side is the width.
The child can be given a thick sheet of paper in the shape of a rectangle and he/she
be asked to explore its shape. The child can observe tactually that there are two pairs
of equal sides of which one pair is longer than the other. Now the child may be
explained that the longer side is the length and the shorter side is the width of the
rectangle. The Braille slate or abacus may also be useful to explain this concept.
- Square
In a quadrilateral if all the four sides are equal and if all the angles are right angles
then the quadrilateral is called a square.
A cut out of the square may be given and the child be asked to explore the shape.
Length
Wi
dth
