(b)
What was the factor they changed as they carried out their
investigation?
………………………………………………….........………....
1 mark
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(c)
Write TWO factors they should keep the same at the start to
make their test fair.
1 mark
1. ………………………………………………….........………....
2. ………………………………………………….........………....
1 mark
(d)
Suggest another set of data they could collect to compare
these bricks.
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1 mark
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