Algebra Visualization Book 5 with Mortensen Math.com. Montessori k-12 Homeschool curriculum

Algebra Visualization Bk. 5 with Jerry Mortensen, Mortensen Math.com. Montessori k-12 Homeschool Preschool online curriculum video. Visualizing algebraic expressions with manipulative blocks by Mortensen Math.com 800-475-8748 for other Mathematics curriculum teaching tools, manipulatives, books cds and tapes.