us1Mathematics Education Associates is the point of contact for Dr. David A. Thomas and Dr. Cynthia S. Thomas, now semi-retired mathematics educators. During our careers we

  • Taught at the intermediate, middle, high school, & university levels
  • Won and directed ~$7M in grants & contracts for mathematics education projects
  • Gave 100+ presentations at mathematics education meetings
  • Published scores of proceedings papers, scholarly articles, and books
  • Won prestigious state and national teaching and R&D awards

We are interested in K-12 mathematics teacher preparation, enhancement, and mathematics technology implementation. We welcome inquiries from individuals, school districts, and universities engaged in mathematics education. We may be reached via

  • Mail: 405 Park Dr N #5D, Great Falls, MT 59401
  • Web:
  • Email:
  • Skype:
  • Phone: 406-403-5895
  • Montana


A fully functional, free version of The Geometers Sketchpad is available online. Install then open Sketchpad. When you are prompted to register, use the License Name and Authorization Code provided below in your License Details.

  • License Name: Sketchpad
  • Authorization Code: X8V65CFBD5H4U66WETXJNEEM

Mathematical Modeling for Girls Project description    donate   Rotary Presentation


The International Day of the Girl Child, celebrated annually on the 11th of October, reminds us of the importance of supporting every girl to develop her skills, enter the workforce on equal terms, and reach her full potential. Across South Africa, millions of girls living in segregated, impoverished rural townships have little or no access to university STEM faculty and/or professionals who could, as mentors, help them realize this dream. The Mathematical Modeling for Girls Project is piloting an approach for addressing this issue. because

Sponsor: U.S. Department of State and implemented by Partners of the Americas in partnership with the Bureau of Educational and Cultural Affairs

US Exchange Alumni: David A. Thomas, Great Falls, MT and Ellie Hill Smith, Missoula, MT

Location: Mamelodi Campus, University of Pretormodelia, South Africa

Selected Papers, Presentations, Etc.

  • MCTM 2019 presentation here
  • Jacobsen Koepke, D., Thomas, D., & Manning, A. (2019). Fatal Encounters. Research in Social Sciences and Technology, 4(1), 30-50.  here
  • NCTM 2019 presentation   here
  • Signature Montana article about me  here
  • ICEMST 2018 Proceedings Paper here & PowerPoint Presentation here
  • Mathematics Education in South Africa: Many Perspectives, Many Voices. Education Research Highlights in Mathematics, Science and Technology 2017, 32.     here
  • Six Weeks in Kathmandu: Reflections of a Fulbright Specialist. AMTE Connections, 27(1), 2017.    here  banana
  • Searching for significance in unstructured data: Text mining with Leximancer. European Education Research Journal, 13(2), 2014.     here
  • Understanding Number & Operations      eBook  Book
  • The mathematics of perspective: An introduction to the cross ratio. On-Math: Online Journal of school mathematics, 2(2), 2003. Reston, VA: National Council of Teachers of Mathematics.      here
  • Modern geometry (2002). Brooks Cole Publishing Company. Pacific Grove, California. ISBN 0-534-36550-7.    here
  • Fulbright Scholar  visit to South Africa here

cover    here