Education
Doctorate Degree
PhD in Mathematics Education
Portland State University, 2022
Master's Degree
MS in Mathematics
Portland State University, 2018
Bachelor's Degree
BS in Mathematics
Portland State University, 2015
Featured grants
- Melhuish, Kathleen Mary (Principal), Heaton, Ruth (Co-Principal), Thanheiser, Eva (Co-Principal), Strickland, Sharon K (Co-Principal), Sorto, Maria Alejandra (Co-Principal), Ellis, Brittney Marie (Co-Principal). Using Technology to Capture Classroom Interactions: The Design, Validation, and Dissemination of a Formative Assessment of Instruction Tool for Diverse K-8 Mathematics Classrooms, NSF, Federal, $1984657. (Submitted: November 2, 2017, Funded: September 4, 2018 - August 31, 2023). Grant.
- Patterson, Cody Lynn (Principal), Melhuish, Kathleen Mary (Co-Principal), Strickland, Sharon K (Co-Principal), Ellis, Brittney Marie (Co-Principal). MAA OPEN Math, Mathematical Association of America, Institutional (Higher Ed), $12000. (Submitted: October 2024, Funded: May 2025 - December 2025). Grant.
- Melhuish, Kathleen Mary, Ellis, Brittney Marie, Patterson, Cody Lynn, Strickland, Sharon K. Structuring Equitable Participation in Undergraduate Proof, National Science Foundation, Federal, $600000. (Submitted: July 2022, Funded: January 1, 2023 - December 31, 2025). Grant.

Featured scholarly/creative works
- Ellis, B. M., Alzaga Elizondo, T., & Guajardo, L. (2026). A narrative inquiry into students’ proof journeys and mathematical master narratives. In In A.P. Adiredja, B.P. Katz, K. Melhuish, & K. Gallagher (Eds.), Proceedings of the 28th Annual Conference on Research on Undergraduate Mathematics Education (pp. 348–356).
- Alzaga Elizondo, T., Vroom, K., & Ellis, B. M. (2026). “It is always a quandary”: Uncertainty (d)iscourse in the proof classroom. In R. M. Zbiek, X. Yao, A. McCloskey, & F. Arbaugh (Eds.), Proceedings of the Forty-Seventh Annual Meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education (pp. 1641–1645). https://doi.org/10.51272/pmena.47.2025
- Ellis, B. M., Austin, C. K., Hamilton, C. D., Dvarishkis, B. C., & Melhuish, K. M. (2025). Examining inequitable talk and perceived status during group-worthy tasks in an undergraduate topology course. In S. Cook, B. Katz, & K. Melhuish (Eds.), Proceedings of the 27th Annual Conference on Research in Undergraduate Mathematics Education (pp. 439–447).
- Ellis, B. M., & Alzaga Elizondo, T. (2024). Two competing storylines that influenced status during small group proof activity. In K. W. Kosko, J. Caniglia, S. A. Courtney, M. Zolfaghari, & G. A. Morris (Eds.), Proceedings of the Forty-Sixth Annual Meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education (pp. 264–269). https://doi.org/10.51272/pmena.46.2024
- Ellis, B. M., & Wrightsman, E. (2024). A counterstory of a Black girl’s forms of resilience in a standards-based mathematics classroom. Journal of Urban Mathematics Education, 17(1), 48–83. https://doi.org/10.21423/jume-v17i1a514
Featured awards
- Award / Honor Recipient: Teaching Excellence, Mathematics Department at Texas State University. December 2025
- Award / Honor Recipient: Graduate Student Outstanding Teaching Award, Portland State University. 2018

Featured service activities
- Reviewer / Referee
Research in Undergraduate Mathematics Education
- Reviewer / Referee
Research in Undergraduate Mathematics Education
- Reviewer / Referee
Research in Undergraduate Mathematics Education
- Organizer
Mathematics Education Seminar
- Member
Colloquium Committee
- Member
Library Committee
