Mattemester

Mattemester is an educational website offering free maths practice for children in grades 1–7. Designed around primary-school maths, it presents exercises as a journey through a playful galaxy, where learners solve problems, collect stars and unlock new worlds. The site requires no login and displays no advertisements.

Its activities cover addition, subtraction, multiplication and division, with multiple levels for children to practise at their own pace. Additional topics include reading analogue and digital clocks, calculating elapsed time, counting coins, adding prices and working out change. Children can also explore fractions and decimals through examples involving parts of a whole, numbers and percentages, or practise interpreting written word problems and selecting the correct answer.

Mattemester includes a leaderboard called Stjernehallen, where players can collect points and compare results. Its child-friendly format combines maths exercises with game-like goals, making it a resource for practising foundational skills. The site also provides information about the service, along with privacy details and a contact option.