Skill-building fun on the go! Kids love these colorful cards for learning new facts and practicing skills. An ideal quiet-time activity, Pocket Flash Cards are even more fun with friends. Best of all, they're value-priced so you can keep a wide variety of titles on hand. Durable cards, no see-through. 56 two-sided cards per set, 3-1/8 x 5-1/4". Ideal for teaching: Pre-Kindergarten to 2nd Grade, ages 5 to 7.