Kids enjoy rapping along with this engaging video to practice adding sums up to 18 and subtracting differences from 18. The first videos teach the concepts of adding or subtracting by using fun objects. Later, students enjoy trying to beat the delayed answers performed by D.J. Doc Roc. Facts are presented both in order and mixed. Humorous lyrics and colorful graphics help hold interest. Includes the commutative property of addition and using addition to check subtraction. This video includes all the material on our Addition Rap and Subtraction Rap audio programs. Approx. 53 minutes. Choose DVD or VHS.