Three Dimensional Shapes

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Class:2

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Subject:Mathematics

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Topic-Three dimensional shapes

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Content:Identify object in our environment that are three dimensional shapes

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Examples of cubes

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Examples of cuboids

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Identify the flat faces,edges and vertices(corners)of cubes and cuboids

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Features of cubes and cuboids

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Three dimensional shapes are cubes,cuboids,cylinders and spheres

Examples of cubes are cubes of sugar,cubes of maggi and ludo dice

Examples of cuboids are mathematical set,toothpaste box,match box,e.t.c

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The edges of a cube or cuboids is where the flat faces meet.The vertices is where the edge of cubes and cuboids meets.

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Features of cubes and cuboids

Cube

It has 6 flat faces

It has 12 edges

It has a vertices(corners)

It has a square face

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Cuboids

It has 6 flat faces

It has 12 edges

It has 8 vertices

It has a rectangular face

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Example

Take a cube of sugar and matchbox

Count the number of flat faces both objects have?

How many flat faces do the objects have?

The cube of sugar and matchbox both have 6 flat faces.

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Count the number of edges of cube of sugar and match box

How many edges do the objects have?

The cube of sugar and matchbox both have 12 edges

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Count the number of vertices the cube of sugar and matchbox

How many vertices do the objects have?

The cube of sugar and matchbox both have 8 vertices

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Evaluation Questions

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Copy and complete each of the following statement

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1.A cube and cuboid each have

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a) ___________________faces

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b) ___________________edge

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c) ___________________vertices

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2.Each face of cube is __________________

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3.Each face of cuboid is ___________________

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4.List two objects in your environment that are cubes

___________and____________

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5.Name two objects in your environment that are cuboids

___________and____________

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