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Questions 6-10 are based on the following procedure.
Let's Make a Windmill
You will need:
Steps:
(Adapted from Experiment with Ecology, 2005)
How to make the wind wheel rotate?
By fixing a tiny machine inside the stick.
By putting it in front of a fan.
By bringing it outdoors.
By touching its edges.
8 dari 10 siswa nilainya naik
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00
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00
:
37
:
46
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