Lisa's collection of geometry resources
Rolling Cups, Shell Center. Read this first by Dan Meyer. Lisa’s blog post on it.
Analyzing Congruency Proofs, Shell Center
AngLegs - If you Google the term, you can sometimes find them cheaper
Introducing Proof Using Formal Systems, Justin Lanier
THE Kate's Measuring angles Geogebra Trig activity, Kate Nowak
Another Geogebra discovering trig Activity, Lisa Bejarano
Blog post reflecting on teaching Constructions in Geometry, Lisa Bejarano
The Hurrier I go the Behinder I get, Annie Fetter