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activity
touch and tell. Who am I?
Place different wooden solid shapes or objects with variation in
faces, corners and edges. Blindfold a child and ask them to pick
an object as per the details given by other children.

For example, a student may be asked to take out an object with
one corner.
Similarly, continue with other objects with another student.

Practice Time 7C

1. Look at your surroundings and name:

(a) one cubical object. _______ (b) one spherical object. _______

(c) one cylindrical object. _______ (d) one cuboidal object. _______

2. How many faces, vertices and edges do these solid shape have?

Solid shape Cube Cuboid Cone Cylinder Sphere

Faces

Vertices

edges

SURfACE Of ObjECTS

We identify whether a solid can stalk,
roll or slide, by observing its faces or
surfaces. That means stalking, rolling

or sliding of objects depends upon the
nature of their surfaces.

Let us try to make a stalk of cubical

blocks as well as balls.

140 Mathematics-2