Math practice meets tactile exploration—with super-cute match-ups children can’t wait to get their hands on! Kids just select a textured picture card and touch each bug as they add to find sums within 20...then find the matching number card to show their answers. Plus, the self-checking match-ups are divided into four leveled pockets—helping children learn to add to 5, 10, 15 and 20! You get 40 tactile cards, 40 number cards and 4 activity pockets, plus an activity guide. Pockets measure 4" x 9 3/4".