Oct 14

Sheet Music

sheet music

This is Sheet Music Montage, Coney Island 1950 by Harold Feinstein. I found it via Sad Burro. I’m not sure why, but the patterns and reptitition in this image speak to my mathy sense of beauty

Oct 14



I’m really excited about the potential of an new app called MathChat. It is an app that allows students to key in problems. Start to solve them, and when they get stuck have their peers comment and help. It is kind of a mobile version of the OpenStudy website. A couple of perks: as students work through expressions/equations, MathChat checks their work line by line. It only tells them if it is equivalent or not. The student still has to find the mistake and fix it. Also, MathChat uses the touch capabilities of the mobile environment, so that peers can give you help by writing on your problem. This is a real nice touch. It is early and I haven’t really had a chance to test drive this app with students, but the app holds a lot of promise.

found via Free Tech for Teachers

Sep 14

Go Lee Bradley!

lee bradley

One of our own, Lee Bradley, has just written a book called A Programmer’s Guide to the Meaning of Life. Knowing a little about Lee’s eclecticism, this is sure to be a good read. I’m heading to pick up a copy now at lulu.com. Go Tunxis community!

Sep 14

Desmos + Math

I was really blown away with Desmos. They just keep getting better. I found out this week they have apps now for i0S and Android and let you upload pictures. I was trying to figure out the parabola of my smile here. I uploaded my headshot and used a slider to play with the leading coefficient. Looks like I’m y=0.4x^2

Sep 14

Math + Wobbly Tables

Think you will never use math in the real world? Check out this fix for a table with a bad case of the wobbles via LifeHacker.

Sep 14

Math Gifs!

Jay came through with a great link this week. Check out this list of great math/sci gifs. Thanks, Jay!

Aug 14


I got to demo a great new product last week. It is called Mathspace. It is both a web and mobile app, and the real innovation is their exercises allow you to write and check intermediate steps. And their handwriting interpreter is the best I’ve seen. It is a little hard to explain exactly what I mean. Check out the gif above.
There are other perks like adaptive learning, videos, badging, and a gradebook, but it is the above feature that really sets the app apart. The company is young and adding content. Definitely something to watch out for.

Aug 14

Pascal’s Triangle

I caught a great visualization for Pascal’s triangle on Visualizing Math’s Tumblr.

Aug 14

General Solutions to Polynomial Equations

Whenever I’m teaching the quadratic formula I love telling students that there is a formula “like the quadratic” for cubic and quartic equations, but that after that there isn’t any. They seem amazed by it. I guess because it is still amazing to me. I found a real nice graphic by the mathematical poet with each of the formulas. I’m going to pull this out next time I have that discussion so they can see what the formulas look like.

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.