| year of publication | ISBN | author(s) | title |
|---|
| 2004 | 978-1-58610-377-4 | n/a | Volcanoes! (Know-It-Alls) |
| 2001 | 978-1-58610-378-1 | Learning Horizons | Predators! (Know-It-Alls) |
| 2007 | 978-1-58610-411-5 | Unknown | Fourth-Sixth Grade Language |
| 2001 | 978-1-58610-515-0 | Grades 1-2 Ultimate Skill Builder |
| 2006 | 978-1-58610-588-4 | Preschool (Learn Every Day) |
| '' | 978-1-58610-589-1 | Learning Horizons | Phonics (Learn Every Day) |
| '' | 978-1-58610-590-7 | Math (Learn Every Day) |
| '' | 978-1-58610-591-4 | Reading and Writing (Learn Every Day) |
| '' | 978-1-58610-632-4 | Unknown | Preschool Plus (Ultimate Skill Builder) |
| 2006 | 978-1-58610-633-1 | Learning Horizons | Kindergarten (Ultimate Skill Builder) |
| 2002 | 978-1-58610-658-4 | Mary Packard | Who Is in My Tub? (Parents Magazine Play & Learn) |
| 2006 | 978-1-58610-699-7 | Learning Horizons | Reading Comprehension Grade 1 (Learn on the Go) |
| '' | 978-1-58610-700-0 | '' | Reading Comprehension Grade 2: Story Characters, Sequence of Events, Retelling Parts of a Story (Learn on the Go) |
| 2003 | 978-1-58610-710-9 | '' | Advanced Preschool (Learn Every Day) |
| 2006 | 978-1-58610-711-6 | Inc. Learning Horizons | Grammar Skills (Learn Every Day) Ages 6 to 8 |
| '' | 978-1-58610-721-5 | Preschool Ultimate Skill Builder (Ultimate Skill Builders) |
| '' | 978-1-58610-722-2 | Learning Horizons | Grade 1 (Ultimate Skill Builder) |
| 2004 | 978-1-58610-764-2 | unknown | Blue's Clues Colors (Wipe-Off Workbook) |
| '' | 978-1-58610-765-9 | '' | Blue's Clues Sort and Match (Wipe-Off Workbook) |
| 2004 | 978-1-58610-766-6 | Learning Horizons Staff | Dora the Explorer Trace and Draw: Wipe-Off Workbook |
| '' | 978-1-58610-802-1 | Learning Horizons | Language Arts: Grade K (Premium Education Series) |
| '' | 978-1-58610-803-8 | '' | Language Arts Grade 1: Build Learning Skills (Premium Education Series) |
| 2004 | 978-1-58610-804-5 | Learning Horizons | Language Arts: Grade 2 (Premium Education Series) |
| '' | 978-1-58610-805-2 | '' | Language Arts Grade 3: Build Learning Skills (Premium Education Series) |
| '' | 978-1-58610-807-6 | '' | Math: Grade K (Premium Education Series) |
| '' | 978-1-58610-808-3 | '' | Math: Grade 1 (Premium Education Series) |
| '' | 978-1-58610-809-0 | learning-horizons-staff | Math Grade 2 (Premium Education Series) |
| 2004 | 978-1-58610-810-6 | Learning Horizons | Math Grade 3 (Premium Education Series) |
| 2003 | 978-1-58610-813-7 | World Geography (Grade 4-6 Workbook) |
| 2006 | 978-1-58610-864-9 | Learning Horizons Staff | Sesame Street Learn About Letters With Cookie Monster: Ages 3+ |
| '' | 978-1-58610-883-0 | Not Available | Addition: Decoder, Pre-K (Dora the Explorer) |
| '' | 978-1-58610-884-7 | Subtraction: Decoder Workbook: Pre-K (Dora the Explorer) |
| '' | 978-1-58610-885-4 | Letter Practice: Preschool (Blue's Clues) |
| '' | 978-1-58610-887-8 | Number Practice 1-20 (Dora the Explorer) |
| 2006 | 978-1-58610-888-5 | Dora The Explorer · Nick Jr. | Prewriting Practice (Dora the Explorer) |
| '' | 978-1-58610-905-9 | Learning Horizons | Shapes and Patterns: Flap Cards (Dora the Explorer) |
| '' | 978-1-58610-907-3 | '' | Letter Sounds: Flap Cards (Dora the Explorer) |
| '' | 978-1-58610-908-0 | learning-horizons | Sesame Street, Learn About Counting With the Count: Ages 3+, an Educational Workbook |
| '' | 978-1-58610-909-7 | learning horizons | Learn About Colors With Elmo (Sesame Street) |
| 2006 | 978-1-58610-910-3 | unknown | Learn About Measuring With Big Bird (Sesame Street 1 2 3) |
| '' | 978-1-58610-911-0 | Learning Horizons | Sesame Streeet, Know Your Numbers: Wipe-off Workbook (Sesame Street) |
| '' | 978-1-58610-912-7 | learning-horizons-staff | Sesame Street, Let's Compare Sizes: Ages 2 to 4, Wipe-off Workbook |
| '' | 978-1-58610-913-4 | Sesame Street | Discovering Letter Sounds (Sesame Street) |
| '' | 978-1-58610-914-1 | learning-horizons | Name Those Shapes (Sesame Street) |
| 2005 | 978-1-58610-930-1 | Jay Johnson | Dinosaurs! (Know It All) |
| 2005 | 978-1-58610-931-8 | Darlene Freeman | Butterflies! (Know It All) |
| '' | 978-1-58610-932-5 | Irene Trimble | Sharks! (Know It All) |
| '' | 978-1-58610-933-2 | Christopher Nicholas | Kittens (Know It Alls) |
| '' | 978-1-58610-934-9 | Reading Comprehension Grade 1 (Learn on the Go Audio Workbooks) |
| '' | 978-1-58610-935-6 | Learning Horizon Ediotorial | Reading Comprehension Grade 1 (Learn on the Go) |
| 2005 | 978-1-58610-936-3 | n/s | Reading Comprehension Grade 2 (Learn on the Go: Audio Workbooks) |
| '' | 978-1-58610-937-0 | Learning Horizon Ediotorial | Reading Comprehension Grade 2: Story Characters, Sequence of Events, Retelling Parts of a Story (Learn on the Go) |
| 2006 | 978-1-58610-939-4 | Learning Horizons | My Healthy Body: Happy Healthy Monsters (Sesame Street) |
| 2004 | 978-1-58610-941-7 | Nick Jr. | Dora the Explorer Hidden Letter Hunt Take Along Wipe Off Wookbook (Dora the Explorer (Learning Horizons)) (Nick, Jr.) |
| 2006 | 978-1-58610-990-5 | Not Available | Lowercase ABC's (Dora the Explorer) |
| '' | 978-1-58610-992-9 | Learning Horizons | Preschool Adventure: Pre K Workbook (Dora the Explorer) |