Power up essential skills with this handy pack of our most popular flash cards. Fun games, rich in content, big in results! Introduce, practice, and master rhyming words/photo cues, beginning sounds with letters, photos & words, 10 colors & 10 shapes, and number values 0-25. Self-checking, answers on backs. Quick-sorting, no-see-through cards. Two-sided, 3.5″ x 5.25″ cards.