Ahmed, here is a little bit of self-promotion but with links to other
resources. Check out my "Interactive Science Activities on the Web" at: http://www.bridgewater.edu/departments/physics/ISAW/
While there also take a look at the links to other web-based activities.
Richard
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Dr. Richard L. Bowman
Prof. of Physics / Dir. of Acad. Comp.
Bridgewater College
Bridgewater, VA 22812
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This posting is the position of the writer, not that of SUNY-BSC, NAU or the AAPT.