We see a large variety of objects around us. Every day we use many objects. For example,
we use tables, curtains, bottles, books and cupboards in the classroom.
What are these objects made of?
In Grade 3, you observed and classied a variety of objects around you. They were made
of wood, glass, paper and plastic. Wood, glass, paper and plastic are called materials.
Materials are used to make several useful objects.
In this unit, you will learn more about materials.You will compare objects made of dierent
materials. You will study some properties of materials.
You will also investigate why we use these materials and how we choose the right
material for making an object.
Table Bottle Book
In Grade 3, you learnt what material is used to make a few objects around you.
Let us learn more about materials.
Observe the pictures shown in Figure 1.
Figure 1
Raincoat
Activity
1OBSERVING OBJECTS AND IDENTIFYING
DIFFERENT MATERIALS
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