Power up kids´ math skills and confidence! Each pack contains 4 card sets to energize skill practice and mastery: Telling Time, Addition 0-12, Subtraction 0-12, and Math Splash War. Self-checking flash cards feature answers on back for independent learning. Great for school, home, childcare, and travel. Durable, no-see-through cards. Quick-sorting, rounded corners. 56 two-sided cards per set, 3.125" x 5.25". Coordinates with Sea Buddies Collection. Sold as 3 packs, for a total of 12 card sets (3 each of Telling Time, Addition 0-12, Subtraction 0-12, and Math Splash War).