how many? Touch and count them
count the objects and then add or remove because they must be ...
perform simple addition and subtraction operations
insert and remove objects and observe the line of numbers
with this abacus you can better understand the numbers
you can play with blocks to understand numbers even better
drag cards, watch, reflect, play
dial the numbers you want to understand how they work
do you want to break down a number to understand how "it's done"?
you can create the number you want and break it down to understand how it is "made"
find the number that you want
drag coins and banknotes to the stage and watch to learn more about the euro