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Choose one of three doors to experimentally determine the odds of winning the grand prize behind one of the doors, as in the TV program "Let's Make a Deal." Parameters: Staying or switching between the two remaining doors.

Computing exact probabilities for the Racing Game leads to the formula for the probability of simultaneous events.

Students use probability to determine how likely it is for each tree in a small simulated forest to catch on fire.

Run a simulation of how a fire will spread through a stand of trees, learning about probability and chaos. Parameters: Probability that a tree will set fire to each of its eight neighbors.

This worksheet is for use with the Advanced Monty Hall activity (http://www.shodor.org/interactivate/activities/AdvancedMontyHall/).