New teachers can immediately begin using these classroom-tested ways to incorporate mathematical argumentation in their classrooms on a daily basis.
Melissa Graham, email@example.com, is a Senior Lecturer in the Department of Mathematics at Eastern Washington University and is pursuing a PhD in mathematics and science education at Washington State University. She is interested in mathematics teacher learning and culturally responsive pedagogy.
Kristin Lesseig, firstname.lastname@example.org, is an associate professor of mathematics education at Washington State University. Her research interests revolve around justification and proof, with specific attention to professional learning experiences for preservice and in-service teachers that support their work to promote mathematical reasoning in K–12 classrooms.