Wayne Nirode

Pictures and diagrams help high school geometry students develop reasoning and proof-writing skills.

J. Vince Kirwan

Students think about two tasks that appear similar but possess different levels of cognitive demand.

John A. Quintanilla

Exploration with spreadsheets and reliance on previous skills can lead students to determine the line of best fit.

Allison W. McCulloch, Ashley Whitehead, Jennifer N. Lovett, and Blake Whitley

A task using trig functions helps students build an understanding of the importance of context in the modeling process.

Tina Rapke

Using summative assessment in formative ways can promote deep learning.

Jennifer Wagner and Janet Sharp

Modified instruction to replace the deductive textbook approach helps calculus students improve their conceptual understanding and precision.