Crabtree Publishing · Sparknotes
| title | ISBN-13 | year of publication |
|---|---|---|
| Animal Cells | 978-0-7787-4964-6 | 2009 |
| Cross Country and Endurance | 978-0-7787-4980-6 | 2009 |
| Estimation | 978-0-7787-4355-2 | 2008 |
| Fearless Writing Research Paper Workbook Practice for Middle-school Writing | 978-1-4114-9749-8 | 2007 |
| Measurement | 978-0-7787-4359-0 | 2008 |
| Plant Cells | 978-0-7787-4963-9 | 2009 |