Kids learn early math skills when they play with Number Puzzle Boards & Pegs. This teaching tool provides progressive challenges as kids advance. Each number puzzle connects only to the puzzle board with the correct number of holes. Use the self-correcting puzzles alone, or combine them with the stacking pegs to practice counting and learn basic adding and subtracting. Kids also will have fun seeing how high they can stack the pegs. Ages 3 & Up. Contents: 55 Tall-Stacker Pegs and 10 Lauri Crepe Rubber Number Puzzles.