Notice:

1. Portions of this material are based upon work supported by the National Science Foundation under Grant No. 9624680. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.
   
   
2. These exercises include copyrighted material.They may not be copied, sold, or otherwise distributed without written permission. Limited permission is granted for their use by instructors, students, and interested individuals for the purpose of astronomy education in the classroom and at home (i.e., feel free to use them in your class or to play around with - just don't sell them).
   
   
3. No claim or warranty is made regarding the correctness or accuracy of any of the exercises. But please let me know if you find errors!
   
   
4. These pages and their outputs may not be published or used in any published work. (Please don't use those models for the basis of your Ph.D. thesis!)
   
   
5. These exercises may be taken off-line at any point or may be otherwise not available. (I can't gaurantee the server will always be up!)
   
   
6. Many of the Shockwave exercises send a "cookie" via email to a server at the University of Wisconsin Oshkosh. The purpose of this is to track the use and popularity of these exercises. All that is sent is the date/time and IP number of the computer initiating the exercise, and a date/time/IP number if the exercise is completed.