Geometry | Term 1 Chapter 1 | 3rd Maths - Construction of 3D shapes | 3rd Maths : Term 1 Unit 1 : Geometry
Chapter: 3rd Maths : Term 1 Unit 1 : Geometry
Construction of 3D shapes
Construction
of−3D shapes.
Look at the things around you.
Identify the shapes of
the objects. Observe the dimensions of these objects.
Cuboid, Cube, Cylinder,
Sphere, Pyramid, Cone
3D Shapes
Cuboid, Cube, Cylinder, Sphere, Pyramid,
Cone
Solid shapes have
3 Dimensions
namely length, breadth, and
height.
These are shortly
called as 3D shapes.
Let us know
A Cube is a solid shape made of squares. It has 6 faces, 12 edges and
8 vertices.
A Cuboid is a solid shape made of rectangles. It has 6 faces, 12
edges and 8 vertices.
A Sphere is a solid shape made of circles. It has 1 faces, no edges
and no vertex.
Practice
1. Complete the
following table by filing the properties of 2d and 3d shapes.
2. Match the following.
Teacher’s note : Teacher shall facilitate the children to draw the front and side
views of 3d shapes by providing the objects.
Activity 4
Join
the dots to form 3D shapes.
Activity 5
Complete solid shapes
and colour it.
Sphere, Cuboid, Cube, Cone,
Cylinder, Cube
Teacher’s note : Teacher can guide the children to draw 3D object and give the
real object of the 3D shapes, so that the children can touch, feel and find out
the answers.
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