Learn to Multiply by 10 the fun way with D.J. Doc Roc, the Hip Hop Hamster. Includes a music video from Rock 'N Learn's award winning Multiplication Rap DVD and a skip counting video to learn to count by 10 even faster. A randomized drill over facts from 10x0 through 10x12 helps learners check their progress. Once you've learned all the 10x facts, race the clock to see who can get the best time!