| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1994 | 978-0-913063-00-2 | Michael Levin · Charan Langton | The Reading Lesson |
| 2002 | 978-0-913063-02-6 | Michael Levin · Charan Langton MS | The Reading Lesson: Teach Your Child to Read in 20 Easy Lessons |
| 2012 | 978-0-913063-08-8 | Michael Levin · Charan Langton | Reading Lesson: Teach Your Child to Read in 20 Lessons |
| 2007 | 978-0-913063-09-5 | Charan Langton · Michael Levin | The Verbal Math Lesson Level 1: Step-by-Step Math without Pencil or Paper |
| 2008 | 978-0-913063-12-5 | '' | The Verbal Math Lesson Level 2: Step-by-Step Math without Pencil or Paper (Ages 7-8) |
| 2007 | 978-0-913063-13-2 | '' | Big Words for Little Kids: Step-by-Step Advanced Vocabulary Building |