### 85 – Guess my Equation

Guess my equation : Trig edition. Give me a cosine equation for this curve. Give me a sine equation. Give…

Guess my equation : Trig edition. Give me a cosine equation for this curve. Give me a sine equation. Give…

Day 1 of Advanced Computer Programming. James Tanton’s Exploding Dots. Fantastic lead in to binary numbers and it also does a…

At the beginning of the activity: “Oh yay, I love these.” “Yes, marble slides!” “I like these things.” And here’s…

The Introduction to Computer Programming class had a google hangout with Jason Merrill, a programmer for Desmos. REALLY great experience,…

Drove back and forth to Boston yesterday for an IB roundtable meeting for IB Math HL. Really great experience for…

I know that Mary Bourassa has some better techniques for long and synthetic division, but I didn’t have enough time…

Here’s a PreCalc H student’s work while trying to prove (show) the product and sum of the roots formula. Icky algebra, but…

Anna Weltman and Dan Meyer are hosting a mathematical art contest based around loop-de-loops. We worked on paper first (CMONMATTTHINK),…

The students were instructed to go to this link and match up as many parabolas as they could using the…

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