### Week 25 – Lines in Vector Form

I gave the PreCalc H kids three lines in vector form and asked what kind of triangle they formed. Here’s…

I gave the PreCalc H kids three lines in vector form and asked what kind of triangle they formed. Here’s…

For series-ous. Pi? WHY? Briefly talked about in Calc today. Pi, what are you doing in this series question? Keep…

I had a great discussion on twitter about how to properly close a class with a reflection. .@TracyZager I'm really…

Needed some 1D statistics to calculate population standard deviation from mean (by hand). Values had a high variance, 7 to…

Exploding Dots with James Tanton in computer programming. Awesome, fun, engaging, powerful lesson. Not often that I can use those…

This was the last week of classes before midterms and finals, and I got distracted by a couple of projects.…

To fight the winter sleepiness, I try to get the students up and on their feet as much as possible.…

PreCalc H was working on proving trig identities. They were asked to come up with their own trig identity by…

In PreCalc H we started off this last day before break with PolyGraph Hexagons (as a warmup) and then progressed…

I’m struggling with notation in Calculus. We’re talking about derivatives of inverses and how they are related to the original…