"E. K." · R. E. · R.K. · Ronald E.
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Teaching Elementary Mathematics: An Active Approach | 978-0-205-12751-1 (0-205-12751-7) | 1991 |
| Teaching Elementary Mathematics Annotated Instructor's Edition | 978-0-205-12752-8 (0-205-12752-5) | 1991 |