math tool for high school teachers and students. function graphing and analyzing: 2d, 2.5d function graphs and animations, extrema, root, tangent, limit,derivative, integral, inverse; sequence of number: arithmetic progression, geometric progression; analytic geometry: vector, line, circle, ellipse, hyperbola and parabola; solid geometry: spatial line, prism, pyramid, cylinder, cone, dado and sphere; ability to save graph as data file or bmp file; ability to save animation as avi file; ability to move, zoom in, zoom out and rotate the scene.