ISSUES IN SOLUTION

It's recommended to help students with the Mathematica syntax. That should not be a hurdle with this problem. Furthermore, students should already be familiar with Mathematica's Plot[] command before attempting this problem.

Students need not use Do[] loops to build their animations. If they run one at a time and then collect the Sound out put in one cell, they can "animate" it.

In problem #6, students should not be expected to know how to make the change in a predictable fashion as shown in the solution above. However, it is hoped that better students will recognize that the frequency of oscillation is NOT the coefficient of t inside the Sin[ ] or Cos[ ] function and will be interested to find out why not.
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