Emeritus Professor of Mathematics at Shippensburg University and Former Deputy Executive Director of the Mathematical Association of America

I was a member of the Department of Mathematics at Shippensburg University from August 1993 to June 2022. I hold a Ph.D. in Mathematics from Carnegie Mellon University, specializing in a branch of mathematical logic called **model theory**. My current mathematics research spans many areas of **discrete mathematics** including logic, combinatorics and graph theory. My educational agenda focuses on building skills in problem-solving, independent thinking, and communication, especially as these skills relate to the understanding of "abstract" mathematics and the notion of mathematical proof.

Over the course of my career I received several honors, most notable Faculty Member of the Year from the SU Student Association, the MAA EPADEL Crawford Award for Distinguisned Teaching, and the MAA Certificate of Meritorius Service.

While on a leave of absence from Ship from June 2016 to August 2018, I served as Deputy Executive Director of the Mathematical Association of America. In this position I worked on programs the MAA provides to members and the greater mathematics community, including MAA Sections, SIGMAAs, competitions, outreach, public policy, and professional development.

Although retired from teaching, I am still active with mathematical research, curriculum development, and MAA projects. Most notably I am the PI on a national science foundation grant (DUE-2111260) that funds the MAA OPEN Math professional development program, and I serve in a parttime capacity as Director that program.

My involvement in the **MAA** has ranged from service to my regional MAA Section (EPADEL = Eastern PA & Delaware) in the form of organizing our Visiting Lecture program, coordinating our section NExT program, and serving as Secretary, Vice President, and President to involvement in the national organization as **Visiting Mathematician**, member of the Board of Governors (representing EPADEL), **Second Vice President**, and on staff as Deputy Executive Director from June 2016 to August 2018. I continued to be involved with MAA projects, including the MAA Instructional Practices Guide, the MAA META Math project, and the MAA CoMInDS project, until those grants closed. In 2022, MAA launched its OPEN Math program that provides accessible, intensive, online teaching-focused professional development for mathematics instructors. I am the PI of the MAA grant and serve as director for that program.

I have written (with Winston Crawley) a **textbook for Discrete Mathematics** published by John Wiley & Sons, Inc. Complete information about the book can be found at the Wiley website or on amazon.com. I have also created computer-based material for teaching and learning mathematical reasoning and proof through an **NSF DUE Educational Materials Development grant** (0230755). This material supplements the discrete mathematics textbook. In addition, I ran a **MAA PREP workshop** in summer of 2006 on teaching discrete mathematics.

From 2005 to 2016 I was involved in a joint project with Barbara Kaskosz of the University of Rhode Island involving the development of tutorials and workshops for training teaching and curriculum professionals in developing teaching and learning material using Adobe Flash. The central component of this work, the website www.flashandmath.com, is no longer maintained due to the cessation of Flash plugin support in major browsers. This project was supported by an** NSF DUE grant** (0535327), and it resulted in **MAA PREP workshops** during the summers of 2007 and 2008. As part of the project, Barbara and I wrote a book (Flash and Math Applets: Learn by Example) to help math and science instructors get started with **Flash programming** to create educational materia.

The FlashandMath project was honored with the **2009 ICTCM Award for Excellence and Innovation with the Use of Technology in Collegiate Mathematics**. My current work is repurposing many of these ideas for mobile-friendly browsers using HTML5/Canvas. If ActionScript makes a comeback in some form, we may gear up the Flashandmath project once again.

Douglas Ensley, Ph.D.

Emeritus Professor of Mathematics

Residing in the Wilmington, NC area

deensley@ship.edu