Workbook on Mental Addition and
Dr. Benjamin recently teamed up with middle school math teacher
and artist Natalya St. Clair to produce The Art of Mental
Calculation, a workbook designed to teach elementary school
students (and beyond) how to do mental addition and subtraction.
This workbook provides over 300 examples and exercises. Through
clever writing style, amusing illustrations, and engaging
dialogue, the book makes math fun and accessible to everyone. To
purchase your copy (for under $15), visit here.