good concept entry into kindergarten: from 3 years old my son knew his numbers up to 10 and wanted to count all the time: this game allows to understand the concepts of 1/2/3 .... by finding that figure on fingers, dice etc ... by a puzzle system. Nevertheless cartons are fragile and limited development opportunities. We started with 1 2 3 then continue until 5 and then I get out all the boards up to 10.