Argumentation is an important mathematical practice, highlighted by research and policy documents that describe ways to structure reform-oriented classrooms (Nardi and Knuth 2017; NCTM 2000; NGA Center and CCSSI 2010). Participating in argumentation can enhance students' mathematics learning as they make sense of mathematical ideas, provide…

Students who engage in mathematical arguments in classrooms take part in an important practice involving reasoning and justification. As a mathematical practice, argumentation involves using both conceptual and procedural reasoning to justify a claim. Even though argumentation can occur in discussions where one asserts and defends their claim…

Writing in mathematics is complex. The purpose of this article is to share how one teacher, Ms. Hill, used peer-review activities involving rubrics to explicitly communicate mathematical resources that students could draw from when justifying a claim. She found that helping students understand which type of statements could be used in…