Curriculum Links
Ask Dr Math is a question and answer service for math students and their teachers. It has a very useful searchable archive.
Here's an article about why the square root of 2 is irrational.
Proofs without words of the addition and subtraction formulas for sine and cosine.
Interesting Things
An article explaining the game of Sprouts.
Here's a way to name polygons with lots of sides.
Look at what can happen if you doodle in math class.
Monday 3/14/16 is the date that will most closely approximate Pi this century! Here are seven numbers that are at least as cool as Pi.
Until August, 2015, there were only fourteen known types of pentagons that tile the plane. Now there is a fifteenth!
The magic of Mobius strips.
A beautiful animation about the cardioid made before dynamic geometry packages were invented.