The aim of Mathplanet.com is to spread mathematical knowledge all over the world, completely free of charge. We offers courses in high school math such as Pre-algebra, Algebra 1, Algebra 2 and Geometry. We have also prepared practice tests for the SAT and ACT. The educational material is focused on US high school maths. However, since maths is the same all over the world, we welcome everybody to study math with us, for free.