| *Flowery Graphs | ||
 (3.4MB) no sound version (16KB) |
There are 3 buttons |> = play & stop ? = infomation skip = short cut |
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| <what's for?> They always say that, to learn the "sine" and "cosine"of the trigonometric function are meaningless for our life by junior high school students. And I hope it could be an answer for them. Please enjoy. 2008/04/28 |
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