A proven system of teaching for teachers, parents, and students who want to learn on their own. *Requires only 20 minutes per day. *Presented in a simple format that everyone can understand. *Each lesson flows smoothly and logically to the next. *Each lesson is short, concise, and straight to the point. *Each new topic is clearly explained. *Lots of examples with step-by-step solutions. *Each lesson includes valuable helpful hints. *Review is built into each lesson. Students will retain what they have learned. *Each lesson includes Problem Solving. This ensures that students will learn to apply their knowledge to real-life situations. *Includes a "How to Use This Book" section, and an easy-to-use answer key.