The way definitions are written can either help or hinder our proof-writing skills

How you can encourage some creativity in your geometry students, by suggesting they write their own theorems

How to help students understand how the words some, all, and none work together in logic statements

Some thoughts about how we decide what we can assume, based on a diagram in a geometry problem

Geometric Axioms (Postulates) vs Theorems: This simple classroom discussion exercise covers everything from religion to Non-Euclidean Geometry!