G. S. Prentzas has written more than a dozen books for young readers. He works as an editor and writer. He lives in New York State.
- Fall 2017
- Spring 2017
- Fall 2016
"The math teachers at our school are really enjoying the By the Numbers series, and our students are getting a kick from the Global Products set. The MP3 book and the skateboards books are a hot commodity. "—Robin Screen, Ford Middle School