“The Secrets of Mental Math” is a 2-disc DVD set from the Great Courses Series, featuring expert instructor Arthur T. Benjamin. This study guide is designed for adult learners and further education students interested in improving their mental math skills. The DVD set includes a course guidebook and covers a variety of mathematical topics such as arithmetic, algebra, geometry, and calculus, presented in an engaging and accessible manner. Perfect for anyone looking to enhance their mathematical proficiency and deepen their understanding of the subject area.