Cool Science for Curious Kids                             http://www.hhmi.org/coolscience/

 

Funology.com: The Science of Having Fun http://www.funology.com/index.htm

 

High School Science                                            
http://jc-schools.net/tutorials/tools/science-hs.html

 

Do-It-Yourself Science                                                 http://www.csiro.au/resources/DIYScience.html