Mental calculation for everyone

mathildr is a system for depicting quantities. The learning materials are suitable for teaching in schools, for use in educational support or for learning at home. mathildr is available as an app for tablet and PC, a wooden ten-slot-field, flashcards and wooden dice.

We just released a new version of the mathildr app. Please be patient for a few days, until the new features will be included on this website.

Developing an understanding of quantity

mathildr is suitable for children with or without learning difficulties. mathildr’s depictions of quantities are easy to understand and easily remembered. Once they have been learned, they can be used in concepts and modified. In this manner, learners can carry out addition and subtraction exercises in their heads.

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Scientific basis

mathildr was developed together with people with trisomy 21, Down syndrome. The system was developed in the framework of a representative study carried out by the University of Hamburg. The study showed that learners with trisomy 21 rely on abstract learning materials and that they benefit from items being grouped into pairs. The app is suitable for all children and can be used in joint teaching.


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