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Math planet is an online resource where one can study math for free. Take our high school math courses in Pre-algebraAlgebra 1Algebra 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.

Mattecentrum is a Swedish non for profit member organization founded in 2008 in Sweden. Since then, the center has been providing free help in mathematics to all who study math. The purpose of Mattecentrum is to promote equal knowledge acquisition and to increase knowledge and interest in mathematics and other STEM related subjects. The members age varies between 6-26 years old.

The center runs FREE math labs in Sweden at schools, libraries and other premises across 34 cities.
More than 5000 students across the country monthly receive individual help with their studies from the Mattecentrum's 500 active volunteers. In 2019, approx. 30 000 students participated in our Math labs, summer camps and Maths Convention.

Mattecentrum also offers FREE online help apart from Mathplanet:

  • Mathplanet is an English online math book with theory, video lessons and counting exercises with high school math courses. In 2019 the site had 8,4 mn unique users.
  • is a complete Swedish math book with theory, video lessons and counting exercises. is available in Swedish and an Arabic version. In 2019 more than 2,9 million unique users visited the site.
  • has the same theoretical and counting exercises as above, but are currently missing video lessons (something we seek funding for). The material covers the beginning phase grades 3-9 and Matte 1, 2 & 3 for the upper secondary school. In 2019 the site had 413,1 tn unique users.
  • is a Swedish forum where you can ask questions in mathematics, STEM or other school subjects to get help, or to help someone else. In 2019 the site had 781,8 tn unique users.
  • contains all the formulas you need in mathematics, physics and chemistry. 68,452 assistance was provided on During 2019 the site had 348,8 tn unique users.

For more information about us, please visit

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To contact Mattecentrum, please send an email to:

By supporting Mattecentrum you help us to increase the level of knowledge and interest in mathematics among children and young people. Click on the donation button and support Mattecentrum!