The Pre-Algebra Tutor DVD series teaches the fundamentals of pre-algebra through step-by-step example problems that progress in difficulty. Emphasis is placed on giving students confidence in their skills by gradual repetition so that the skills learned are committed to long term memory. This program covers the important topic of teaching students how to multiply integers together. Students will learn how to multiply positive and negative numbers using simple rules to illustrate the process. Grades 9-College. 35 minutes on DVD.