, written by Colin W. Clark, is a comprehensive review guide designed to help adults bridge gaps in their mathematical knowledge from kindergarten through high school. The book focuses on establishing a strong conceptual foundation rather than rote memorization, making it suitable for self-study by those preparing for college or looking to refresh their skills. Core Topics Covered

: Focuses on exponents, exponential growth (compound interest), polynomial algebra, and solving linear and quadratic equations.

The first part of the series emphasizes numbers, basic algebra, and early geometry: