We adults know that counting in groups of 2s, 5s, or 10s makes counting go a lot quicker! Help students learn this trick with this card set featuring subsets to count in 2s, 3s, 4s, 5s, 6s, 7s, 8s, 9s, 10s, 11s, 25s, and 100s. Available as student flash cards (3.5" x 5.5") or teacher flash cards (11" x 17"). Teacher cards are punched and bound with split rings for easy flipping. These flash cards feature the Animal Alphabet for the Gym Phonics and Class Phonics programs. Includes 77 cards.