Richard Feynman found trigonometry notation to be ambiguous and confusing. "If I had sin f, it looked like s×i×n×f" So he decided to create his own notation. See below. 🧐 What do you think?

Have you ever seen a dinosaur travel on a vehicle with square wheels? Now you have. :)

What is a “radian” anyway? It’s an equilateral triangle! (With one side curvilinear). (With many thanks to MathHappens!)

4-H Manitoba Scholarship Applications must be Postmarked on or before February 14th. Have you submitted your application? 4h.mb.ca/scholarships-2/

eⁱˣ = cos(x) + i sin(x)

Playing with parabolas!

Great news from Brainingcamp: "Missing your classroom manipulatives? We have you covered with free access until Jun 30, 2020 due to COVID-19." brainingcamp.com

In typical Dylan-style, he decided to change up the rules for the #mathartchallenge with the toilet paper roll strips and build inside rather than out Annie Perkins

Work with kids & families who need more tools for numeracy, and can't afford them? I've just put together a printer-friendly #TinyPolkaDot starter deck you can print and give away. Get it for free, plus links to instructions in Spanish, French, Mandarin mathforlove.com/2020/05/free-p…

a method of drawing infinitely many touching circles

finding the primes below 50, with the sieve of Eratosthenes

I need to find the genius who created this.

a simple and random process that creates an intricate and structured fractal pattern. At each step, pick a random edge to form a triangle, and the next point is the center of the triangle.

Wow 12-year-old Nigerian boy based in the UK, Chika Ofili, has been presented with a Special Recognition Award for making a new discovery in Mathematics. The little Mathematician just discovered a new formula for divisibility by 7 in Maths

This pointless map shows the average flag colour of European countries. Source: buff.ly/2CtRtmm

It took a couple of hours, but I finished compiling all the links to the digital versions that people have created for activities I have blogged about over the years. Check out my Digital Activities Repository! mathequalslove.blogspot.com/2020/08/digita… #MTBoS #iteachmath

the most important journalism I've ever done

If you love Open Middle and want to help review new problems for the website, please fill out this short form: forms.gle/W8fABH8P56vMXY…. We meet for 1 hour every other month. We REALLY need teachers who are comfortable with high school math. Please share with your friends!