1, 2, 3, 4, 5. 1 cherry + 1 cherry = 2 cherries! Toddlers and preschoolers will have fun learning to count, recognize numbers, and basic math concepts with the Mudpuppy Counting Ring Flash Cards. Each set of colorful math flash cards feature 20 double-sided cards with numbers 1 through 20 on one side and a corresponding illustration with the same number of objects or animals on the other. An additional 6 cards introduce basic addition concepts. The 2. 75” x 5” cards are perfect for little hands to manipulate and are easy to wipe clean. Young children can leave the flash cards on the re-closable plastic ring to keep them together or remove them to practice sorting the numbers. The removable ring makes these flash cards convenient for every day, on-the-go use. Safe even if they find a curious toddler's mouth, the laminated thick cardboard cards are printed with nontoxic inks and are phthalate free. For over 25 years, Mudpuppy has created quality non-digital puzzles, games, and toys for children and families that facilitate creative play and imaginative thinking. All Mudpuppy products adhere to CPSIA, ASTM, and CE Safety Regulations.