This article provides a framework for integrating professional noticing into teachers' practice as a means to support instructional decisions. An illustrative example is included based on actual use with secondary students.
Julie M. Amador, David Glassmeyer and Aaron Brakoniecki
Wendy B. Sanchez and David M. Glassmeyer
In this 3-part activity, students use paper-folding and an interactive computer sketch to develop the equation of a parabola given the focus and directrix.