# Dr. David Plaxco

Assistant Professor

Office: UC428

Mathematics

College of Information and Mathematical Sciences

DavidPlaxco@clayton.edu

## Biography

Formerly an eighth grade teacher, I now research students' proof, student understanding of abstract algebra, and linear algebra curriculum development. I enjoy geometry, puzzles, cubing, movies, music, cooking, and billiards.

## Education

BS, Secondary Mathematics Education, Auburn University, 2007

MS, Mathematics, Virginia Polytechnic Institute and State University, 2011

Ph D, Mathematics, Virginia Polytechnic Institute and State University, 2015

## Awards and Honors

Best Paper Award, SIGMAA-RUME: Special Interest Group of the Mathematical Association of America Conference on the Research of Undergraduate Mathematics Education, Award, 2013

## Intellectual Contributions

David Plaxco, Megan Wawro, Analyzing student understanding in linear algebra through mathematical activity, The Journal of Mathematical Behavior – 2015

David Plaxco, Michelle Zandieh, Megan Wawro, Stretch Directions and Stretch Factors: A Sequence Intended to Support Guided Reinvention of Eigenvector and Eigenvalue, International Congress on Mathematics Education –

David Plaxco, Relationships Between Mathematical Proof and Definition, Psychology of Mathematics Education - North America Chapter – 2010

David Plaxco, THE TEMPORAL CONCEPTION: STUDENT DIFFICULTIES DEFINING PROBABILISTIC INDEPENDENCE 2011

Gail Tang, Houssein El Turkey, Emily Cilli-Turner, Milos Savic, Gulden Karakok, David Plaxco, Inquiry as an entry point to equity in the classroom, International Journal of Mathematical Education in Science and Technology – 2017

## Contracts, Grants, and Sponsored Research

David Plaxco, Megan Wawro, Michelle Zandieh, Christine Andrews-Larson, Collaborative Research: Extending Inquiry-Oriented Linear Algebra, National Science Foundation, Federal, 599971, Currently Under Review – Fall 2019 to Summer 2022

David Plaxco, Megan Wawro, Innovation in Undergraduate Mathematics Education: Supporting Student-Centered Instruction, Virginia Tech Center for Innovation in Learning, State, 10000, Funded – Fall 2013 to Fall 2014

David Plaxco, Michelle Zandieh, Ashish Amresh, Simulation-Based Inquiry-Oriented Linear Algebra, National Science Foundation, Federal, 299999.00, Funded – August 1 2017 to July 31 2020

## Presentations

David Plaxco, Cubes Underscore Art, Joint Mathematics Meetings, American Mathematics Society and Mathematical Association of America – January 15 2019

David Plaxco, Cubes Underscore Art: Exploring How Algebraic Structures Support Aesthetic Patterns on nxnxn Rubik’s Cube-type Puzzles., Joint Mathematics Meetings, American Mathematics Society, Mathematical Association of America – January 18 2019

Caroline Williams-Pierce, David Plaxco, Paul Reimer, Amy Ellis, Muhammad Dogan, MATHEMATICAL PLAY: ACROSS AGES, CONTEXT, AND CONTENT, Meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education, North American Chapter of the International Group for the Psychology of Mathematics Education – November 15 2018

Sepideh Stewart, Jonathan Troup, David Plaxco, Teaching Linear Algebra: Modeling One Instructor’s Decisions to Move between the Worlds of Mathematical Thinking, RUME Conference, SIGMAA-RUME – February 23 2018

Megan Wawro, Michelle Zandieh, David Plaxco, An Inquiry-Oriented Approach to a Guided Reinvention of Eigentheory, DELTA Conference November 28 2017

## Service to the University & University System of Georgia

College, Undergraduate Student Awards Committee, Other – August 15 2018 to June 1 2021

College, CIMS Curriculum Committee, Committee Member – 2017 to 2018

## Service to the Profession

Discussant, SIGMAA on RUME, National – January 15 2019 to January 19 2019

Attendee, Meeting, National Pedagogical Initiatives on Linear Algebra, International – October 4 2018 to October 6 2018

Reviewer, Journal Article, Journal for Research in Mathematics Education, International – Fall 2015 to Present

Reviewer, Conference Paper, SIGMAA on RUME, National – Fall 2011 to Fall 2017