This flash card set includes 56 double-sided cards, each measuring 3-1/8 by 5-1/8 inches, designed for children ages 4 and up. The cards are durable and feature full-color, engaging content on both sides. For easy organization, each card has a hole in the top corner so you can attach a ring or string, and one corner is uniquely shaped to help you quickly line up all the cards in the same direction. When relevant, answers are printed in small type on the back. The set also comes with teaching tips, activity suggestions, instructions, and a few blank cards, making it suitable for both home and classroom use.