Students think resiliently about using the quadratic formula, analyzing factors graphically, finding the shortest distance between two points, and finding margin of error.
Joe Garofalo, firstname.lastname@example.org, is codirector of the Center for Technology and Teacher Education at the University of Virginia in Charlottesville. His interests include mathematical problem solving, educational technology, and mathematics teacher education. Christine P. Trinter, email@example.com, is a research scientist at the University of Virginia. Her interests include educational technology, differentiating mathematics instruction, and mathematical problem solving.