Match the wooden puzzle pairs to master letters and numbers.These clever sets feature every letter of the alphabet and numbers 1-20, each with a matching puzzle piece to illustrate the concept behind the character.To encourage confidence and independent play, every cut within a set is unique-so each letter or number has only one counting group or vocabulary piece that will fit.Children love being able to correct their own work as they play, learn and find the perfect fit for each letter and number tile.