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11.1 Set

What is set?
LEARNING
In our daily life, we can classify the recyclable materials into STANDARDS
several categories, such as paper, plastic, glass, aluminium, Explain the meaning
fabric and so on. How can these categories of materials be of set.
represented mathematically?

1 Group

Aim: To sort and classify objects.
Instruction: Perform the activity in groups of four.

1. Observe each object given below.

2. Classify the objects according to specific groups.
3. What are the common characteristics of each group?

From the results of Exploration Activity 1, the objects which have common characteristics
CHAPTER
will be classified into the same group. Each of these groups is known as set.
11
Self Practice 11.1a

1. Classify the objects in the list below as land, water and air transport.

Car Rocket Sampan
Lorry Aeroplane Boat
Ship Van Ferry
Helicopter Bus Hot-air balloon

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Chapter 11