December 18, 2012, 4:17 pm

# Doing linear algebra with peer instruction and Learning Catalytics

I’m excited and happy to be teaching linear algebra again next semester. Linear algebra has it all — there’s computation that you can do by hand if you like that sort of thing, but also a strong incentive to use computers regularly and prominently. (How big is an incidence matrix that represents, say, Facebook?) There’s theory that motivates the computation. There’s computation that uncovers the theory. There’s something for everybody, and in the words of one of my colleagues, if you don’t like linear algebra then you probably shouldn’t study math at all.

Linear algebra is also an excellent place to use Peer Instruction, possibly moreso than any other sophomore-level mathematics course. Linear algebra is loaded with big ideas that all connect around a central question (whether or not a matrix is invertible). The computation is not the hard part of linear algebra — it…

May 24, 2011, 3:19 pm

# Three things I wish Google Documents would let me do

But like anything, Google Documents isn’t perfect — and in…

August 4, 2010, 7:16 pm

# Google Wave and disruptive simplicity

Image via Wikipedia

Google today announced that it will be suspending development on Google Wave, the communications tool it launched last year. Wave attracted unprecedented hype in the run-up to its launch, with Wave invites serving as a kind of geek status symbol and going for \$70 on eBay. But despite the initial enthusiasm, Google reports that Wave “has not seen the user adoption we would have liked”.

I used Wave once or twice once I managed to get an invite. It was one of the most befuddling experiences I have ever had using technology. Wave was supposed to be a sort of combination instant messenger, email, and file-sharing software platform with social media inputs and outputs. But like a lot of attempts to combine existing  services and solutions, instead of being “both-and”, Wave ended up being “neither-nor”…

November 5, 2008, 1:50 pm

1. Why is it that, in Google Spreadsheets, you can take a two-column set of numerical data and find the slope of the regresssion line for the data, you can find the y-intercept of the regression line, and you can make a scatterplot of the data — but you can’t plot the regression line on top of the scatterplot?

2. How come, in Google Documents, there’s no rudimentary equation editing? How come we can’t have a simple Equation Editor-like pallette system for mathematical typesetting,  inline $$\LaTeX$$ compiling (like WordPress.com blogs and Wikispaces wikis have), OpenOffice’s math typesetting syntax, or even just old-school MathML editing?

I’d be nearly ecstatic, and much more likely to actually use Google Docs for everyday purposes, if some of the smart people at Google could make either one of these two questions go away.

April 13, 2008, 3:53 pm

# Crypto two-fer

• Have you seen the NSA Kids website yet? It’s pretty nifty. High school math and science teachers, you should get your students on there. I am eagerly awaiting somebody to make it into an animated show on Disney or early-morning Discovery Channel for my two girls. (Anything, for the love of God, to displace my 4-year-old’s obsession with Hi-5.)
• Also pretty nifty is the Spelman College Science Olympiad, which has teams from historically black colleges and universities competing in teams to solve problems in programming Google Gadgets (Google is a sponsor of the event), cryptography, website design, hardware/software integration, and robotics. All in the space of one weekend! Sounds like a lot of fun, and it seems like a really good way to promote computer science education on the college level. [h/t here to the Official Google Blog]
• The Chronicle of Higher Education
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