This first Numberblocks Counting Puzzle Set helps little ones learn counting 1?20 through fun puzzle play. As children assemble the chunky, durable puzzle pieces, they?ll be counting the Numberblocks and Numberblobs, identifying each Numberblock?s Numberling, and building colour recognition and fine motor skills along the way. Each clever self-correcting Numberblocks puzzle fits together in a unique way, which means there?s only one right answer. This gives little ones a feeling of achievement as they solve the puzzles themselves.