Background: Current efforts to promote reasoning, problem solving, and discussion are often framed as advancing equity, but scholarship suggests individual students' opportunities to learn can vary considerably in classrooms that attempt to take up these approaches to teaching mathematics. Noticing students' mathematical strengths and positioning…

Background: Classroom discourse featuring meaning making supports students achieving discipline-specific learning. However, moving beyond recitation requires developing beliefs, skills, structures, and practices. Any theorizing we do about developing discussion practice must attend to realities of culturally and linguistically diverse classrooms.…