College of Education and Human Development - George Mason University
Graduate School of Education - George Mason University

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School of Recreation, Health, and Tourism - George Mason University

The School of Recreation, Health, and Tourism (SRHT) offers exciting, career-ready majors in dynamic fields such as athletic training, tourism and events management, health and physical education, kinesiology, sport management, and recreation management. SRHT features renowned faculty, cutting-edge research, six laboratories and centers, and a diverse student body of more than 1,000 undergraduate and graduate students each year. Each major requires one or more internship or clinical experiences, ensuring that students graduate not just with a transcript but with a resume that demonstrates their professional aptitude and skills.

PhD, Purdue University
Associate Professor
Center Director, Mathematics Education Center
Director, PhD in Education and Human Development
Mathematics Education Leadership

Contact Information

Send email to Dr. Hjalmarson

Phone: (703) 993-4818
Fax: (703) 993-3643

Margret Hjalmarson's website

George Mason University
Fairfax Campus
Thompson Hall 2402
4400 University Dr.
Fairfax, VA 22030


Dr. Hjalmarson holds a Ph.D. in Curriculum and Instruction with a concentration in Mathematics Education from Purdue University. She also has a Masters degree in Mathematics from Purdue University and a B.S. in Mathematics from Mount Holyoke College. Dr. Hjalmarson's research interests include mathematics education and engineering education. She has been awarded multiple NSF-funded projects on STEM faculty development for interactive teaching and engineering learning. In both of these settings, her work focuses on design-based research and models and modeling frameworks for teaching and learning.

She is presently serving as a Program Director in the Division of Research on Learning in Formal and Informal Settings in the Directorate for Education & Human Resources at the National Science Foundation. She currently leads the Discovery Research K-12 program and manages proposals and awards related to mathematics and engineering education across other programs in the Division.

Research Interests

  • Mathematics education
  • Engineering education
  • K-8 Mathematics Specialists
  • STEM faculty teaching development

Recent Publications

Dr. Hjalmarson has published in a variety of education journals in engineering and mathematics education. She has also presented at the conferences of the American Educational Research Association, the American Society for Engineering Education, the Association for Mathematics Teacher Education and other venues.


  • Hjalmarson, M. (2015). Learning to teach math specialists online: A self-study. Journal for Mathematics Teacher Education.
  • Diefes-Dux, H. A., Hjalmarson, M. A., & Zawojewski, J. (2013). Student team solutions to an open-ended mathematical modeling problem: Gaining insights for educational improvement, Journal of Engineering Education, 102(1), 179-216.
  • Smith, T. M. & Hjalmarson, M. A. (2013). Eliciting and developing teachers’ conceptions of random processes in a probability and statistics course. Mathematics Thinking and Learning, 15(1), 58-82.
  • Diefes-Dux, H. A., Zawojewski, J. S., Hjalmarson, M. A., & Cardella, M. E. (2012). A framework for analyzing feedback in a formative assessment system for mathematical modeling problems, Journal of Engineering Education, 101(2), 375-404.
  • Hjalmarson, M. A., Moore, T. J., and delMas, R. (2011). Statistical analysis when the data is an image: Eliciting student thinking about sampling and variability, Statistics Education Research  Journal, 10(1), 15-34.
  • Diefes-Dux, H. A., Zawojewski, J. S., & Hjalmarson, M. A. (2010). Designing research-based evaluation tools for open-ended problems. International Journal of Engineering Education, 26(4), 807-819.
  • Moore, T. J. & Hjalmarson, M. A. (2010). Developing measures of roughness: Using problem solving as a method to document student thinking. International Journal of Engineering Education, 26(4), 820-830.
  • Hjalmarson, M. (2008). Mathematics curriculum systems: Models for analysis of curricular innovation and development, Peabody Journal for Education, 83(4), 592-610.
  • Hjalmarson, M. A. & Diefes-Dux, H. A. (2008). Teacher as designer: A framework for the analysis of mathematical model-eliciting activities. The Interdiscipiinary Journal of Problem-based Learning, 2(1), 57-78.
  • Hjalmarson, M. (2007). Engineering students designing a statistical procedure. Journal of Mathematical Behavior, 26(2), 178-188.
  • Hjalmarson, M., Cardella, M., & Adams, M. (2007). The role of iterative cycles in engineering problem solving. In R. Lesh, E. Hamilton & J. Kaput (Eds.), Foundations for the future in mathematics education (pp.409-430). Mahwah, NJ: Lawrence Erlbaum
  • Martin, F. G., Hjalmarson, M.A., & Wankat, P. C. (2007). When the model is a program. In R. Lesh, E. Hamilton, & J. Kaput (Eds.), Foundations for the future in mathematics education (pp. 395-408). Mahwah, NJ: Lawrence Erlbaum.
  • Diefes-Dux, H. A., Hjalmarson, M., Bowman, K, & Zawojewski, J. S. (2006). Quantifying Aluminum Crystal Size Part 1: The Model-Eliciting Activity. Journal of STEM Education>, 7(1&2), 51-63.
  • Hjalmarson, M. A., Diefes-Dux, H. A., Bowman, K., & Zawojewski, J. S. (2006). Quantifying Aluminum Crystal Size Part 2: The Model-Development Sequence. Journal of STEM Education, i7(1&2), 64-73.
  • Lesh, R., Doerr, H. M., Carmona, G., & Hjalmarson, M. (2003). Beyond constructivism. Mathematical Thinking and Learning,5(2,3), 211-234
  • Lesh, R., Lester, F. K., & Hjalmarson, M. (2003). A models and modeling perspective on metacognitive functioning in everyday situations where mathematical constructs need to be developed. In R. A. Lesh & H. M. Doerr (eds.), Beyond constructivism: Models & modeling perspectives on mathematics problem solving, learning & teaching (pp. 383-404). Hillsdale, NJ: Lawrence Erlbaum Associates.