This applet allows the user to simulate a race where the results are based on the roll of a die.
The user can determine which player moves forward for a given roll, and can then experiment with
the race by determining which player will win more often based on the rules that they specify.
When a number is rolled, the winner moves the number of spaces shown on the die, meaning that
the probability of a player winning the race is determined not just by how many of the rolls are
assigned to him/her, but also by which rolls are assigned.

The rolling of a die is one example of probability. Each roll of the die gives you a one in
six chance that a certain number will appear. Probability is just the expected value of what the
outcome should be. If you run the applet a hundred times you will see that the probability you
came up with (known as the experimental probability) will be close but not always exactly what
you would expect (known as the theoretical probability).

Simulation

Credits

The original version of this activity is part of the Shodor
Education Foundation's Middle School Math Courseware,
Project Interactivate, which
contains other interactived activities as well as suggested lesson plans
and supporting materials.