Exploding Dots

Exploding Dots are sweeping the globe! Consistently described as "mind blowing," this mathematical experience will completely revolutionize your thinking of school arithmetic, algebra, and beyond! Exploding Dots are so exciting, so thrilling, that their story has been selected as the roll-out topic for GLOBAL MATH WEEK 2017!

Fractions are Hard!

Exploring fractions with new understanding.

Permutations and Combinations

“Does order matter?” This single question causes endless headache and woe for student and teacher alike when forced to think in the paradigm of permutations and combinations. My advice: Don’t think that way! Here’s how to naturally and easily understand and do combinations and permutations without ever doing them!

Quadratics

What is the natural story of quadratics? Answer: Symmetry! See how the symmetry of squares makes the algebra of quadratics natural and straightforward. See how to use symmetry to your extreme advantage in graphing quadratics. This course starts with Galileo's motivation for studying quadratics, and wends its way through all the standard content, eschewing all rote doing and memorization. Symmetry makes this material ridiculously easy!

The Astounding Power of Area

See how the profoundly simple idea of drawing a rectangle unites and explains so much of the K-12 curriculum. These notes will knock your socks off!

The Gist of It

Quick and simple explanations of math topics galore. Requests accepted!