I've tried to explain why AngLegs are a must have for high school geometry and should not only be considered a tool for younger students. Here is an example of how I find them indispensable in teaching triangle congruence. This lesson is adapted from MARS: Evaluating Conditions for Congruency. "Ok class, you are sitting in pairs and at … Continue reading Analyzing Triangle Congruence with AngLegs
I got the idea from Tina Cardone, here: http://drawingonmath.blogspot.com/2012/10/origami-angles.html It is simple, students were working & thinking and struggling and creating & verifying conjectures, talking math. Love it!
It was frustrating for students to construct using geogebra, so this morning I made 2 parallel lines & a transversal & measured each angle. They got to move lines around and observe changes in angle measurements.