Grow your MathLink Cubes Numberblocks collection! This Numberblocks MathLink Cubes Activity Set adds more double-digit numbery fun to math skills practice and imaginative play. Children see how numbers really work as they build their own Numberblocks from Twenty-one to Thirty. Through hands-on discovery and play they will master the math skills of counting adding subtracting and more. This set is complete with faceplates Numberlings stickers and accessories to complete the characters and create your own stories. Each of the 20 included math activities are linked to the episodes on TV. Grab your MathLink Cubes and play along! Each set includes 235 MathLink Cubes 20 Dual Connector MathLink Cubes 33 Faceplates 10 Numberlings 3 Accessories 1 Sticker Sheet 10 Double-sided Activity Cards 10 Double-sided Character Cards with Build Guides and 1 Activity Guide. As your little one works from preschool to kindergarten the Numberblocks MathLink Cubes 21-30 Activity Set is a great way to make learning fun and help with the transition. Numberblocks is helping millions of children around the world to fall in love with numbers master key math skills and discover the joy of learning.