My husband thought I was nuts when I ordered these for our 25 month old grandson. I can happily report at 31 months he can count to 20 and recognize all his numbers up to 30, I am positive these puzzle pieces helped. He loves the bright colors and has a blast counting each pieces unique pictures. Would recommend this for anyone who loves learning toys for their child. An added bonus is the clear plastic cover that slides onto the wooden storage box, keeps all the pieces from flying out should little hands reach the box before you do.

Great product