"In our work, we help teachers support rich, inclusive mathematical discussions among all students. For these discussions to happen, a classroom culture must be developed based on what are often new norms for mathematics class: that students should listen to each other, not just the teacher; that mistakes are OK, even welcomed, as students search for mathematical truth together. New norms take time and deliberate effort to develop."
Read more from Jennifer Knudsen, author of Mathematical Argumentation in Middle School-The What, Why, and How, on Corwin Connect.