| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Mental Math in Junior High / Grades 7-9 | 978-0-86651-433-0 (0-86651-433-3) | 1988 | Barbara J. Reys · Robert E. Reys |
| Mental Math in the Middle Grades | 978-0-86651-312-8 (0-86651-312-4) | 1987 | Barbara Reys · Robert Reys |