Playground Physics http://lyra.colorado.edu/sbo/mary/play/
A curriculum plan with student worksheets and teachers' guides for upper elementary and middle school students which is designed to relate the experience children have on the playground to basic physics concepts.
Skateboard Science http://www.exploratorium.edu/skateboarding/index.html
The techniques and equipment skateboarders use to seemingly bend the law of gravity. In the trickscience section, the site explains the physics behind the stunts, and several experiments to try at home. The equipment section offers an in-depth look at skateboard design.
Teaching Dynamics with Excel97 http://www.phys.virginia.edu/classes/581/
The material presented here is designed to be directly useful to a teacher or student in a more traditional high school or beginning university physics course on mechanics. There are profuse instructions, and some prewritten spreadsheets are available as well.
The K-8 Aeronautics Internet Textbook http://wings.avkids.com/
Resources for those interested in aeronautics including an online textbook, sign language dictionary, explanations of the principles of aeronautics, lesson plans, interactive activities, and curriculum bridges to other subjects.