Mighty Math (4 Pack)

Save money! This four DVD set includes: Basic Math, Pre-Algebra Part 1, Algebra Part 1 and Geometry Part 1.Grade Level: 8+Co-written by Richard Semmler, Ph.D. of Northern Virginia Community College, Roger Howey, Ph.D. of Central Michigan University, Dan Kalman, Ph.D. of American University, Rebecca Berg, Ph.D. of Bowie State University, and Flavia Colonna, Ph.D., of George Mason University.