The Geoboard Triangle Quest yields many results. The challenge for students is to verify which—if any—are correct.
Michael S. Meagher, Michael Todd Edwards, and S. Asli Özgün-Koca
S. Asli Özgün-Koca, Michael Todd Edwards, and Michael Meagher
The Spaghetti Sine Curves activity, which uses GeoGebra applets to enhance student learning, illustrates how technology supports effective use of physical materials.