Dana L. Grosser-Clarkson

The absolute value function opens the door to a better way to solve problems involving square roots.

Martha O. Dinkelman and Laurie O. Cavey

In an introductory algebra course, LGEs engage students in writing about mathematics and can be used as a formative assessment tool.

Wayne Nirode

Familiar sets of points defined by distances appear as unexpected shapes in larger-distance geometry.

Jaclyn M. Murawska and Keith A. Nabb

A nonroutine task with three hallmarks of a good problem offers the flexibility to model real-life, messy data.

Thomas G. Edwards, Kenneth R. Chelst, Angela M. Principato, and Thad L. Wilhelm

Restricting variables to integer values can lead to interesting classroom dialogues.