Counterexamples as Starting Points for Reasoning and Sense Making
David A. Yopp
May 2013, Volume 106, Issue 9, Page 674
Asked to “fix” a false conjecture, students combine their reasoning and observations about absolute value inequalities, signed numbers, and distance to write true mathematical statements.
Teacher in Training / Preservice Teacher
Math Coordinator / Coach
Problem Solving / Problem Posing
Reasoning and Proof