Students can draw graphs in a coordinate system. This program is good for especially high school students. The program makes it very easy to visualize a function and paste it into another program. Students can do calculations on the functions.
This site is dedicated to mathematical, historical and algorithmic aspects of some classical mathematical constants (like p, e, Euler's constant g, z(3), ¼). A few results on prime numbers are added. Easy and fast programs are also included and can be downloaded.