| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Zig-Zag Island: Cassette | 978-0-19-432881-4 | 1998 | Jane Cadwallader |
| Zig-Zag Island: Flashcards | 978-0-19-432897-5 | 1998 | " |
| Zig-Zag Island: Teacher's Book | 978-0-19-432877-7 | 1998 | " |
| Zig-Zag Magic: Cassette | 978-0-19-432882-1 | 1999 | " |
| Zig-Zag Magic: Class Book | 978-0-19-432876-0 | 1999 | " |
| Zig-Zag Magic: Flashcards | 978-0-19-432899-9 | 1999 | " |
| Zig-Zag Magic: Magic: Posters | 978-0-19-432900-2 | 1999 | " |
| Zig-Zag Magic: Teacher's Book | 978-0-19-432878-4 | 1999 | " |