Interactivate is an award winning free resource for math and science that provides Java-based activities and lessons, along tools and a dictionary for students and discussions and standards alignment for teachers. This web tool is produced by Shodor, a nonprofit organization that supports computational science. One thing that I really like about this tool is the step-by-step guide that uses screen shots and clear directions to help users effectively use the activities.
http://www.shodor.org/interactivate/guide/
This guide "keeps it simple" and I encourage you to check it out. It is a superb example of how to develop a user guide.
The teachers I have shared this with really enjoy using it with their students. We need to find ways to challenge and engage students in their study of math and science. I hope you find this a powerful learning tool and as always, I hope you will comment after you check out Interactivate.
