Year+10

=Trigonometric Graphs=

media type="file" key="wavelength_tcm4-165109.swf" width="690" height="690"

media type="file" key="magic_gopher.swf" width="722" height="722"

The magic gopher can also be found here: http://learnenglish.britishcouncil.org/en/vocabulary-games/magic-gopher?page=4

If you want an explanation of how it works, then visit here:@http://scienceavenger.blogspot.com/2007/08/revealing-magic-gophers-secrets-and.html

http://learnenglish.britishcouncil.org/en/vocabulary-games/magic-gopher?page=4