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All the things gifted to us by nature
are natural things and things created
by humans are human-made things.
Warm Circle the natural things with a red
21 st
Up! crayon and the human-made things Century #Critical Thinking WHAT ARE MACHINES?
Skills
with a blue crayon.
7
Machines
Computers need energy to
Yesterday, my elder brother work, just like trees need
washed all the clothes in just sunlight to grow.
half an hour without getting
tired.
How? My mom takes so much time and her hand hurts so much
after that.
My brother used a washing machine!
Do you know a washing machine is a human-made
thing? Look at some other human-made things.

