std 3 SCERT Maths [Lesson 4 When Shapes Join]

          LESSON 4

WHEN SHAPES JOIN


SOLID SHAPES


Objects that do not 

entirely lie on a flat

surface are called 

solids.


These are some solid shapes.


Cuboid [Rectangular block]



A cuboid is 6 faces. It 

has 12 edges and 

8 Corners.


Cube



Cube has 6 faces. All 

faces are square. It

 has 12 edges and

8 Corners.

Cone



Cylinder


Sphere





Activity 1

Find out the shapes of

 the objects below


*Bangle-Circle

*Ball-Sphere

*Post Card-Rectangle

*bread-Square

*Chalk-Cylinder

*Birthday hat-Cone

*Pencil box-Cuboid

*dice-Cube

*Samoosa-triangle


Activity 2 [Match the following]


Activity 3

List the following objects by their shapes








*Complete the

 following pages
*Circle, Triangle, 

Rectangle

*rectangle shape-Roof
 
of the shop ,etc....

*Circle shape -Wheel of

 vehicle, etc....

* Triangle shape-

Tower,Garlands,etc..

















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