Applet a Day Keeps Math Misunderstandings Away
Manipula Math With Java offers about 280 interactive, animated applets connected with the mathematics of interest to students (714) and all who are interested in mathematics (hopefully these groups are not disjoint).
Applets are offered in the following areas:
 Middle school mathematics  91 applets
 Trigonomety  25 applets
 Calculus  64 applets
 Vectors  29 applets
 Complex numbers  23 applets
 Conics  9 applets
 Miscelleaneous  38 applets, which includes transformations, fractals, Pascal's triangle, geometry, quadratics, equation systems, etc....even a slide rule!
You need to look at each applet and decide how it would help clarify/solidify a concept...plus how you would use it (i.e. as a demonstration, a student exploration, a tool, etc.). Some of the applets are good and useful, and some are of lesser value.
This software is offered by a company called International Education Software (IES), which deals "with research, development, import, and sales of software for mathematics education" on a worldwide basis. Go to the IES home page if you would like to obtain the same applet software in Japanese...or even a dynamic geometry program (think Geometers Sketch Pad) in Japanese.
