Blair, Kevin. “On the Appropriateness and Necessity of Proofs and Proving in Middle School Mathematics Classrooms”. Learning to Teach Language Arts, Mathematics, Science, and Social Studies Through Research and Practice 10, no. 1 (October 1, 2021). Accessed April 19, 2024. https://openjournals.utoledo.edu/index.php/learningtoteach/article/view/511.