Tap, listen and play with the numbers from 0 to 99, with their families and their neighbours — just like in the ABN method used in many Spanish schools. And if you'd like it on paper, print it with or without gaps.
Tap any number: you'll hear its name and see its family and its neighbours
👉 Swipe the square sideways to see all the numbers
In the ABN method, a number's family is every number that shares its ten (the 30 family: 30 to 39 — its row on the square). Its neighbours are the numbers just before and just after it (47's neighbours are 46 and 48). The hundred square makes those links visible: going down a row is +10, going up a row is −10. That's also why the ABN square starts at 0: each row is one whole family.
Tap a starting number and use the +1, −1, +10 and −10 buttons: the path lights up as you go. It's the foundation of ABN calculation: moving around the square in jumps of tens and ones.
The next step in ABN is the 1000 square: the same 100 boxes but going up in tens, to count in 10s and in 100s and to place three-digit numbers.
Roughly ages 4 to 8: first exploring and hearing the names, then families and neighbours, and last of all the jumps and the Find it! game.