Level 2: Develop the concept of trial.

2A

Qualify events as similarly uncertain.


"When I spin the spinner, it doesn't matter if I go clockwise or counter-clockwise. I think it's pretty much the same thing either way."
"When we throw the die, it makes a big difference if you shake the cup before you roll or not."

Connecting Hand and Computer Simulations

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Controlling the Spinner

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Turning Ideas into a Test

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Hand Spinner vs. Computer Spinner

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Lessons