Cabri Express

Features of Cabri Express include an agile calculator (scientific & graphic), formula and equation editor, and a dynamic geometry environment. All Wrapped in an intuitive app.
With its friendly interface, Cabri Express allows students to visualize and manipulate abstract mathematical concepts in any topic: algebra, calculus, tables, functions, graphs, 2D & 3D geometry, transformation, statistics & trigonometry. The app is a laboratory in which they explore, model, and investigate without any limits.
Cabri is free, it is the reference software for dynamic mathematics. It has been used for more than 25 years by millions and millions of teachers/students around the world.
Good maths for students and power & ease for teachers, to teach math, not the software.