It has a quiz similar to the one in this activity. Click here to see it. The United States Nuclear Regulatory Commission has a teacher lesson site that can be downloaded. It contains the figure that we have in this site. Click here to see it.
Extensions Do the experiment for various distances from the source.
Make a graph and describe the result. Each student should be able to participate in this activity. Click here for further information on laboratories with students with special needs. Each student should complete a data table and the questions on the worksheet. That is, you remove the pennies coming up tails each time.