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Plinko Probability



This manipulative provides opportunities to:

  • Explore the probability of an event

  • Compare empirical and theoretical probabilities

  • Drop 1, 10, or 100 balls at a time

  • Adjust the number of pegs and change the probability that balls will fall to the left or right

  • Observe the summary statistics and parameters

PhET also provides translated versions of the simulation in multiple languages, teacher created activities, and with a free account you can access their teaching resources.

What are your thoughts on this virtual manipulative? Do you have experience using it in your classroom? Please support others by rating this virtual manipulative and sharing feedback in the comments section below.

Simulation by PhET Interactive Simulations, University of Colorado Boulder, licensed under CC-BY-4.0 (

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