Teach and review number bonds with flash cards. Each card shows a different number bond on each side, with one of the bonds missing. The answer is printed in small type on the opposite side. Also features blank cards for adding more to the set. Terrific for individual students, small groups, or whole-class instruction. Cards have a hole punched in one corner, so they can be stored on a book ring or tied together with string. Includes instructions and tips for the teacher or parent, plus suggested activities. 56 double-sided cards. Each card measures 3-1/8 x 5-1/8".