world-shaker:

Teens Abandoning Social Networks, Study Says

Facebook is the “most important” social media site for about 10% fewer teenagers than it was a year ago, according to a new PiperJaffray survey of over 5,000 teenagers. The teens surveyed are less interested in Twitter, YouTube, Google+, Flickr, and Tumblr too. Of the major sites included in the survey, only Pinterest has grown. (Instagram was not included in the survey in spring 2012).

backwardinduction:

Today my abstract algebra professor literally wrote “use magic” in a proof on the board today because he was too lazy to prove one of his claims.

To my tiny army of followers: I am tweeting things about math and education and thangs and stuff. You can read it at twitter.com/dave_sabol. 

revolutionizeed:

Need to share this with my students as we talk about Egypt very soon…

An interactive installation, “Measuring the Universe” by  Roman Ondak, in which visitors mark their height in black ink on a white wall, representing a star in a network of celestial bodies to symbolize the space each individual takes up in our vast universe.

(via imtheasauce)

appliedmathemagics:

Let’s take a moment to admire the beautiful icosahedral geodesic sphere known as the Times Square Ball.

Hipster Venn Diagram

The Museum of Math has opened! 

Anonymous asked: woah you go to st Ignatius :O

You could say that. You could also say I teach there. Or that I teach math there. I’m Mr. Sabol.