02361 - Zero+1
Zero+1 - A simple but ingenious tool that shows very small children the importance of numbers. The first gear to the right represents units 1-10, the second gear represents tens and the third hundreds. By turning the first gear 10 units, the second gear moves one unit, and so on. This way, you can add and subtract. It’s a fun and intuitive way to introduce children to the world of numbers.