Flash cards offer children an easy, hands-on way to practice their addition facts. The Addition All Facts through 12 Flash Card set features 169 full-color, self-checking flash cards and 1 activity card. Ideal for ages 6+, these 2.91″ x 5.82″ flash cards prepare your child for classroom success by providing practice that strengthens basic addition skills. Featuring rounded corners for easy sorting and made from a durable material, these cards are great to use at home, in school, or on the road.