| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Classroom Zone: Jokes, Riddles, Tongue Twisters & "Daffynitions" | 978-1-59953-145-8 (1-59953-145-3) | 2008 |
| History Zone: Jokes, Riddles, Tongue Twisters & "Daffynitions" | 978-1-59953-141-0 (1-59953-141-0) | 2007 |
| The Sports Zone | 978-1-59953-144-1 (1-59953-144-5) | 2007 |