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Student Corner
Visit different places and identify the different types of machines such
as a music system, watch, television, mobile phone, a refrigerator and
computer. Identify the machines that need electricity to work and that
don't.
Recap
Machines are man-made things.
We see many things around us. Some are natural and some are man-made.
Computer is a machine that can do many kinds of work.
Machines make our work easier.
Machines also save our time.
Exercise
A. Tick ( ) the correct option.
1. Which of the following is a machine?
a. b. c.
2. Which of the following machine helps to solve sums?
a. b. c.
3. Which of the following is not a man-made thing?
a. b. c.
Computer—A Wonderful Machine 11

