Claus Zinn

The app implements the popular number wheels known from many school books; it supports primary school children to practise their skills in basic arith …

Digit Square is the new Teacher Lämpel educational app ! It supports primary school children to practise their skills in basic arithmetic: addition, s …

Lehrer Lämpel is an educational app that supports school children (usually 5rd grade) to practise their fraction addition and subtraction skills.The a …

Lehrer Lämpel is an educational app that supports primary school children (usually 3rd grade) to practise their multi-column addition skills.The stand …

Lehrer Lämpel is an educational app that supports primary school children (usually 3rd grade) to practise their multi-column subtraction skills.The tw …

Doing homework with paper and pencil is the most common way to exercise new skills. But when there is no supervision, errors may not get detected in a …