The more I teach, the more I learn. Eventually, I'm going to become pretty great at this job. The summer before my first year of teaching, I made a set of problem solving strategy posters to hang on the wall. My first year of teaching, these posters had an entire bulletin board dedicated to them. I would occasionally reference them in class, but I didn't really do anything substantial with them. Problem Solving Strategies Bulletin BoardThis summer, I redecorated and […]
This, ladies and gentlemen and genderqueer folks, is Pascal’s tetrahedron, a three dimensional analogue of Pascal’s triangle, and it’s pretty freaking great.
I’ve never heard of this before!
Can’t. Stop. Watching.
this is hypnotic…
Conic sections are all connected! A hyperbola is an anti circle, in this case.
Remember, the equation for a circle involves adding x squared and y squared, while the equation for a hyperbola involves subtracting one from the other. The other consequence of this is that is that if you extend the graph of either one to include imaginary and complex x or y values, a hyperbola
"Whatever is worth saying,can be stated in fifty words or less"~ Stanislaw Ulam *bt (before twitter)Thanks to @cytiaB for this oneThe 113th day of the year; 113 is prime, its reversal (311) is prime, and the number you get by any reordering of its digits is still prime. Students might try to find other of these "absolute" or "permutable" primes.Also the sum of the first 113 digits of e is prime. That was also true of yesterday's number, and tomorrow's. (I was just wondering to myself, what is […]
This is a copy of the message sent to the Committee members by e-mail on April 23:
From: Carles Casacuberta
Sent: Wednesday, April 23, 2014 1:04 AM
To: firstname.lastname@example.org ; email@example.com ; firstname.lastname@example.org ; email@example.com ; firstname.lastname@example.org ; email@example.com ; firstname.lastname@example.org ; email@example.com ; firstname.lastname@example.org ; email@example.com
Subject: EMS Committee for European Solidarity
According to the rules that we agreed for our