In this livestream I cover a variety of topics listed below. I have organized the topics in order and provided a timestamp ...

In this video I present a set of problems to help prepare for learning about rational functions in precalculus. While ...

On weekdays, he stands in front of a classroom of 20, dry-erase marker in hand, gently guiding students through trigonometry, ...

When my students grow too dependent on their calculators, I ask them to find a number that, when multiplied by itself, gives them 2. Students quickly see that since 1² = 1 and 2² = 4, the answer has ...

Using high school algebra and geometry, and knowing just one rational point on a circle or elliptic curve, we can locate infinitely many others. You’re sitting at the end of a long conference table, ...

The assumption in the main result of Basic differential forms for actions of Lie groups (Proc. Amer. Math. Soc. 124 (1996), 1633-1642) is removed. Journal Information This monthly journal, begun in ...