| title | ISBN-13 | year of publication |
|---|---|---|
| Horizons Math Book 1 | 978-1-58095-923-0 | 1998 |
| Horizons Math BOOK 1 | 978-1-58095-963-6 | 1998 |
| Horizons Math BOOK 2 | 978-1-58095-930-8 | 1998 |
| Horizons Math BOOK 2 | 978-1-58095-947-6 | 1998 |
| Horizons Mathematics: Level 1 Teacher's Guide | 978-1-58095-931-5 | 2004 |