Friendly Numberblocks from the hit TV series bring math learning to life. Children see how numbers really work as they build their own NumberBlocks from 11 to 20 and master the math skills of counting, adding, subtracting, multiplying, and dividing. Each of the numbered learning activities is directly tied to the TV episodes. Includes 155 MathLink cubes, 52 faceplates, 44 stickers, 10 character cards, 15 double-sided, reusable activity cards, an activity guide more!