Paul Wellin is a coauthor of two books: Mathematica: An Introduction to Programming with Mathematica and Computer Simulations with Mathematica. In addition, he founded the journal Mathematica in Education and Research and was its editor in chief for the first five years. He is an author of Wolfram Training General Mathematica courses.

Wellin has had 14 years of experience teaching mathematics at the secondary through university level. He was also instrumental in introducing and integrating Mathematica into the undergraduate curriculum at Sonoma State University, where he taught for four years. He was a senior instructor with Wolfram Research for nine years.