Notched corners for quick organization. Large, easy to handle 6-1/4" x 3-1/4" cards. Bold, heavy type to use with large groups. Durable, thick card stock (14 pt.). Self-checking. Great for small groups, pairs, and whole class participation. Great for teaching the relationship between multiplication and division (e.g.: 3 x 1 = 3 on one side, 3 / 3 = 1 on the reverse). Includes: 1 Box of Multiplication and Division Cards, Vertical