Prealgebra is based on Bob Prior’s own varied teaching experiences, and is designed to serve the needs of today's developmental math student and classroom. Bob knows that because today's students don't always have a lot of "face time" with their instructors, a usable, thorough, easy-to-follow text is key to their success. He draws students into the book (and not just the exercise sets!) by incorporating practice opportunities throughout the body of text. Thorough explanations and examples explain the "why" behind the mathematics, and patiently develop each concept.