Math on the Web

Nov 14

Desmos adds Regression

The web’s coolest graphing utility becomes cooler by adding regression. Take the tour.

Nov 14

Magic Square

magic square

I caught this beautiful new stamp on the Guardian. I wish I could have a poster of it for my office.

Jul 14

Fractals and Furniture

fractal furniture

I’ve been shopping for furniture for the last two weeks. Why won’t my wife take me to a store with math furniture? You might say there is no such thing as math furniture, but you’d be wrong.

The above drawer system is called the fractal 23 by Takeshi Miyakawa.

Jul 14

Math and Twitter

What can a math teacher find out about math from Twitter? I loved this Deb Costello post. I used to do the same thing before google shuttered real-time search. I loved pulling up “math” at the beginning of my classes to see all the post/updates that rolled in. It was always good for a laugh.

Jun 14

Monkeys + Math

I caught a really interesting article in Science about researchers using monkeys to try and understand how the mammalian brain represents numbers. Who knew monkeys can do so much math?

Jun 14

Math + Roomates

My father sent over this great article from the New York Times on using fair division to split up rent with roommates when all rooms aren’t equal. Not only is it a nice application of math that guarantees an “envy free” living situation, but the NYT did a bang up job with the graphics. There is a Wolfram like manipulative and they give you a calculator as well. Well done, NYT!

May 14

Math and Brain trauma

I would never wished to get mercilessly beat outside a bar, but if I did it would be awesome to become a math savant. Rob Clark sent me a wild story of a man named Jason Padgett. Padgett wrote a book about the experience of going from someone who went from having trouble to a number theorist in a short space of time, Struck by Genius. Thanks, Rob, for sending that my way!

May 14

The tides of the the quadratic formula

quadratic search

I’m teaching the quadratic formula right now in my classes and just ran across this on my Tumblr. This is the number of google queries for the quadratic formula over time. As Charmed as Charmander says, “It repeats in the same pattern every year. Down in summer, up in September, down again in December and up again in spring time before going down again in the summer.” It makes sense that there is a pattern. It amazes me just how regular it is.

Apr 14

Brackets + Math


On the heels of UCONN’s surprising win, here is an article about a Davidson professor, who has created a whole course around the mathematics of bracketology. That is a course I’d love to take.

Mar 14

Mobile is Coming…Finally!

wolfram alpha logo
I just got back from the ICTCM math/tech conference. I had a great time and learned a lot. Two things I wanted to pass on. Both MyMathLab and Mathematica are going to be viewable on mobile devices. I had actually heard about MyMathLab for a while now. The news about Mathematica was new though. I’m really excited because you can create such amazing manipulatives for students. The problem has been that those manipulatives have been locked into Mathematica’s CDF format. And admittedly anyone can get a CDF viewer for free by downloading, but who wants to deal with that! I’ll be implementing it in my online classes a ton now.