Go to the following link:

http://www.shodor.org/interactivate/activities/spinner3/index.html#

Now, follow the directions below:

Choose how many sections you want on the spinner by clicking on +1 or -1. Choose 9 sections for this round.
• Leave "How Many Spins?" on 1. You will be spinning 20 times, but do not change this because it spins all 20 at once and you can't watch the numbers change.
• Calcualte the theoretical probability BEFORE spinning. Show all of your work on a sheet of notebook paper.
• Now, spin 20 times. Was your theoretical probability correct? How close was it to the experimental?
• Repeat this activity 5 times, showing all of your work and responses.