Sepideh Stewart is an Associate Professor of Mathematics at the Department of Mathematics, University of Oklahoma. She is the editor of And the Rest is Just Algebra (2017), and co-editor of Challenges and Strategies in Teaching Linear Algebra (2018). She is one of the guest editors of a special edition of ZDM special issue on “Research on Teaching and Learning in Linear Algebra” (Issue 6, 2019, https://link.springer.com/journal/11858). She completed her doctoral dissertation on research on pedagogy of Linear Algebra under supervision of Professor Mike Thomas and Professor Ivan Reilly at The University of Auckland, New Zealand in 2008. Her current research interests are on Linear Algebra. Since 2009 she has also been working on several projects on mathematics education at the university level collaborating with mathematicians. In addition, her latest research project on Algebra is examining undergraduate students’ difficulties with school Algebra, which are causing major interruptions in their success in Calculus courses.