Let's learn about numbers from 1 to 20 with I Spy Match It! Numbers! Each puzzle card has two pieces: the numeral and objects reflecting that number or the same number of objects to count. Look around and “spy” for the objects that match the number and by simply matching the pieces together, children will learn to recognize the numeral and develop their counting skills. The puzzles are self-correcting and include 20 puzzle sets. Recommended for ages 3+ years.