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23 October, 08:07

Juan propped up a graham cracker in a shallow bowl. He then set up an electric fan to blow on the graham cracker at three different speeds. What is Juan's independent variable in this experiment?

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  1. 23 October, 08:32
    0
    The speed of the electric fan.
  2. 23 October, 08:37
    0
    The independent variable is the changing fan speeds.

    Independent variable are changed or controlled in experiments.
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