The Vaughn Cube™ for Geometry Formulas
Imagine learning 60 plane and solid geometry formulas in less than 90 minutes. Now you can - with the remarkable Dean Vaughn Total Retention System™!
The Dean Vaughn Cube™ for Geometry Formulas DVD teaches both concept and content. Like all Dean Vaughn Learning Systems, it is designed for 100% retention. It provides an easy way to understand the transition from plane to solid geometry and how to easily remember all 60 formulas taught in the course. No course on Plane and Solid Geometry has ever approached the effectiveness of this remarkable learning system.
*The DVD video requires a device capable of playing a DVD video disk.