Colleen Haberern
Students used a pinch of this (a 3D printer and geometry software) and a cup of that (various volume formulas) to complete a tiered task.
David A. Yopp and Jacob L. Ellsworth
Learn why generalizing is important but that overgeneralizing can be problematic.
Carolyn James, Ana Casas, and Douglas Grant
Encouraging students to justify earlier as they attempt to solve an open-ended task can lead to greater understanding and engagement.