Examining the covariation of triangle dimensions and area offers a geometric context that makes analyzing a piecewise function easier for students.
Area of a Changing Triangle: Piecing It Together
GPS: How Does It Grow?
S. Asli Özgün-Koca, Kelly Hagan, Rebecca Robichaux-Davis, and Jennifer M. Bay-Williams
Growing Problem Solvers provides four original, related, classroom-ready mathematical tasks, one for each grade band. Together, these tasks illustrate the trajectory of learners’ growth as problem solvers across their years of school mathematics.
Structuring Boardspace to Facilitate Repeated Reasoning
William DeLeeuw, Samuel Otten, and Ruveyda Karaman Dundar
The planful use of boardspace can help move the structure and regularity to the visual realm and make it more readily perceivable by students.