Match these wooden puzzle pairs to make mastering numbers as easy as 1, 2, 3. Groups of objects illustrate numbers 1-20, and the puzzles are self-correcting--each piece has only one match that fits--so children can play independently and learn all the while. Dimensions: 5.75" x 13.75" x 3" Assembled

Key Features :

i : Great for matching and counting skills
ii : Color pictures feature familiar objects
iii : Wooden storage box with slide-in lid
iv : Ages 4 and up