Selected Work

Book Chapters

Plaxco, D. & Wawro, M. (in press).  Argumentation in the Context of Tertiary Mathematics: A case study of classroom argumentation and the role of instructor moves. In Kosko, K., Staples, M., Conner, A., & Bieda, K.

Plaxco, D., Zandieh, M., & Wawro, M. (2018). Stretch Directions and Stretch Factors: A Sequence Intended to Support Guided Reinvention of Eigenvector and Eigenvalue. In Challenges and Strategies in Teaching Linear Algebra (pp. 175-192). Springer, Cham.

Refereed Publications

Stewart, S., Troup, J., and Plaxco, D. (2019). Reflection on teaching linear algebra: Examining one instructor's resources, orientations and goals (ROGs) while moving between the three worlds of mathematical thinking. ZDM Mathematics Education, 1253-1266.

Plaxco, D., Zandieh, M., & Wawro, M. (2018). Stretch Directions and Stretch Factors: A Sequence Intended to Support Guided Reinvention of Eigenvector and Eigenvalue. In Challenges and Strategies in Teaching Linear Algebra, 175-192. Springer, Cham.

Plaxco, D., & Wawro, M. (2015). Analyzing student understanding in linear algebra through mathematical activity. Journal of Mathematical Behavior38, 87-100.

 

Refereed Conference Proceedings

Mauntel, M., Levine, B., Plaxco, D., & Zandieh, M. (2020). Get that basket! Deciphering student strategies in the linear algebra game Vector Unknown. Proceedings of the 23rd Annual Conference on Research in Undergraduate Mathematics Education. Boston, MA.

Mauntel, M., Sipes, J., Zandieh, M., Plaxco, D., & Levine, B. (2019, January). “Let’s see” –Students play VectorUnknown, an inquiry-oriented linear algebra digital game. Proceedings of the 22nd Annual Conference on Research in Undergraduate Mathematics Education (pp. 959-965). Oklahoma City, OK.

Zandieh, M., Plaxco, D., Williams-Pierce, C., & Amresh, A. (2018). Drawing on Three Fields of Education Research to Frame the Development of Digital Games for Inquiry-Oriented Linear Algebra. Proceedings of the Twentieth Annual Conference on Research in Undergraduate Mathematics Education (pp. 1270-1279). San Diego, CA.

Plaxco, D. (2016). Re-claiming: One way in which conceptual understanding informs proving activity. Proceedings of the Nineteenth Annual Conference on Research in Undergraduate Mathematics Education, (pp. 383-396). Pittsburgh, PA

Plaxco, D. (2015). John’s lemma: How one student’s proof activity informed his understanding of inverse. To be included in the Proceedings of the Eighteenth Annual Conference on Research in Undergraduate Mathematics Education, #, ##-##.  Pittsburgh, PA.

 

Zandieh, M., Plaxco, D., Wawro, M., Rasmussen, C., Milbourne, H., & Czeranko, K. (2015). Extending multiple choice format to document student thinking. To be included in the Proceedings of the Eighteenth Annual Conference on Research in Undergraduate Mathematics Education, #, ##-##.  Pittsburgh, PA. 

 

Plaxco, D., Wawro, M., & Zeitsman, L. (2014). Student understanding of linear independence of functions. To be included in the Proceedings of the Seventeenth Annual Conference on Research in Undergraduate Mathematics Education (pp. 992-997). Denver, CO.

 

Wawro, M. & Plaxco, D. (2013). Utilizing Types Of Mathematical Activities To Facilitate Characterizing Student Understanding Of Span And Linear Independence. In S. Brown, G. Karakok, K. H. Roh, and M. Oehrtman (Eds.), Proceedings of the Sixteenth Annual Conference on Research in Undergraduate Mathematics Education, Volume 1 (pp. 1-15.)  Denver, CO.

 

Plaxco, D. (2012). Relationships between mathematical proof and definition. In L. R. Van Zoest, J.-J. Lo, & J. L. Kratky (Eds.), Proceedings of the 33rd annual meeting of the North American Chapter of the International Group for Psychology in Mathematics Education (pp. 167-173). Kalamazoo, MI.

 

Plaxco, D. (2011). The temporal conception: student difficulties defining probabilistic independence. In L. R. Wiest & T. Lamberg, (Eds.) Proceedings of the 32nd annual meeting of the North American Chapter of the International Group for Psychology in Mathematics Education (pp. 276-283). Reno, NV.

 

Other Work and Presentations

Cubes Underscore Art: Alternative Solutions on the nxnxn Rubik’s Cube - presented at Moves Conference, 2019.

The Cubes Underscore Art project: Producing patterns on nxnxn versions of twisty puzzles like the Rubik’s cube - JJM, 2019.

Reverse Cayley Graphs - presented at JMM, 2015

 

The Case of Joe - presented at PME, 2013

 

Proof and Definition - presented at PME, 2012

 

Paper Folding Poster - presented at TRUSE, 2012

 

Paper Folding Activity (setting it up) - presented at VCTM, 2012

 

Plaxco, D. (2011). Relationship between students' proof schemes and definitions (Master's thesis).