| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Teaching Science to Children: An Inquiry Approach | 978-0-07-256395-5 (0-07-256395-8) | 2004 | Alfred Friedl · Tricia Koontz |
| Teaching Science to Children: An Inquiry Approach | 978-0-07-238057-6 (0-07-238057-8) | 2000 | Alfred E Friedl |
T/K · Terje Knutsen · Teruhisa Komatsu · Tracy Knudsen · Tricia Koontz · Trixie Koontz