From the friendly TV series Numberblocks, an award winning show from BBC, the Numberblocks crew brings math learning to life with this officially licensed counting puzzle set! It's time for some number fun with Numberblocks one to twenty. These colorful, self-correcting puzzles help children practice counting and learn early math skills. Details: Assorted Numberblocks characters, colors and designs 8.5" x 6.5" x 3" packaging size 60 pieces Includes 20 self-correcting puzzles Officially licensed Suitable for ages 3 and up