Three Dimensional Shapes
Class:2
Subject:Mathematics
Topic-Three dimensional shapes
Content:Identify object in our environment that are three dimensional shapes
Examples of cubes
Examples of cuboids
Identify the flat faces,edges and vertices(corners)of cubes and cuboids
Features of cubes and cuboids
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
The edges of a cube or cuboids is where the flat faces meet.The vertices is where the edge of cubes and cuboids meets.
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
Cuboids
It has 6 flat faces
It has 12 edges
It has 8 vertices
It has a rectangular face
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.
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
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
Evaluation Questions
Copy and complete each of the following statement
1.A cube and cuboid each have
a) ___________________faces
b) ___________________edge
c) ___________________vertices
2.Each face of cube is __________________
3.Each face of cuboid is ___________________
4.List two objects in your environment that are cubes
___________and____________
5.Name two objects in your environment that are cuboids
___________and____________