The part of the conversation we missed recording was a student saying that we only need to look at the tens when talking about numbers and comparing them, her partner told her that she disagreed because you can't just not care about the ones, they matter. I got my phone out to hear the first student respond to the second student that disagreed. So many fabulous norms are present here: students use their visuals to support their idea, students listen to the speaker and make eye contact, use math terminology, respond when it is their turn without interrupting and respect each other's opinion.