| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Activities handbook for teaching the metric system | 978-0-205-04848-9 (0-205-04848-X) | 1976 | Gary G. Bitter · Jerald L. Mikesell |
| Subtraction Games & Activities. Primary | 978-0-07-530252-0 (0-07-530252-7) | 1990 | Gary G. Bitter |