| title | ISBN-13 | year of publication |
|---|---|---|
| Decimals, Percent and Money; Measurement and Transportation | 978-0-07-037114-9 | 1981 |
| Fractions: Food; Fractions and Decimals: Electronic Communications | 978-0-07-037113-2 | 1981 |
| Multiplication: Energy and Construction; Division: Medicine | 978-0-07-037112-5 | 1981 |
| Number Systems and Addition: Personal Communications; Subtraction: Recreation | 978-0-07-037111-8 | 1981 |