Many of the students at our school have a rebellious, social-justice streak which has only grown louder this year. “How can I learn Geometry,” a student once cried out in class, “when all over the ...

I first started teaching Geometry last year and have taken over "Informal Geometry" this year. As the name of the second class implies, the idea of formal proof is strongly de-emphasized; this class ...

For centuries, students have learned that in a right triangle, the square of the hypotenuse equals the sum of the squares of the other two sides. Known as the Pythagorean Theorem, this ...