Making bubbles
This task is about fair testing.
Ana and Jen want to find out which is the best washing-up liquid for blowing bubbles.
Help them to plan a "fair test".
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2
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a) What does "best" mean in the circumstances?
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b) How many types of washing-up liquids should they try?
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c) What should they measure?
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d) What will they need to keep the same?
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e) What should they do to make sure their results are more accurate?
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