Total 9 Posts

## My Annual Report 2011

I record the same quantity of data as I have in years past but I have less and less time to do anything with it. So I’m pulling out just one statistic that interested me and giving it the six-year, longitudinal treatment:

I don’t know what to make of that graph at all but it ties a nice, accurate bow around my last year.

Also: 2007, 2008, 2009, 2010.

2012 Feb 22. Sarah Kessler at Mashable writes up personal annual reports, including an interview with yours truly.

## Coming At You Via Livestream On Wednesday, January 11

I’ll be facilitating a brief workshop and delivering an even briefer lecture at The Urban School of San Francisco on Wednesday, January 11. I’m told that both events are at capacity, but my hosts will be streaming our sessions on their Livestream channel.

The workshop runs from 12:00 to 2:30. (All times Pacific.) It will comprise a) a problem-solving session, b) a debrief of that session, c) some practice turning the raw mathematical material we find in textbooks, on the Internet, and in our daily lives into perplexing tasks for our students.

I’ve titled the lecture “Capturing, Sharing, and Resolving Perplexity.” I would have gone with “The Instructional Technology Presentation for People Who Don’t Like Instructional Technology Presentations” but I’m a coward.

## Can Someone Tell Me What I’m Looking At Here?

I downloaded a clip of the game show The Price Is Right and analyzed the footage in Excel and AfterEffects.

It probably goes without saying I’m wondering, “Is it predictable?” What model underlies the showcase spinner? If you knew the initial position of the spinner and, say, the amount of time it took the spinner to complete one revolution, how close could you get to predicting its final position?

This one has me outclassed, though. Someone teach me something, okay?

2012 Jan 7: Here is the timecode data I gathered.

2012 Jan 7: And the spinner.

## [3ACTS] Car Caravan

If you find that first act perplexing, feel free to follow up on all three. Four other notes:

• This one pairs nicely with the ticket roll problem. Try to imagine the tickets as really, really thin cars.
• In the second act, I offer this picture of a single Matchbox car. There aren’t any measurements and it bears perhaps only a passing resemblance to any of the cars in the picture. I like these moments a lot, though. The student has to estimate the dimensions of the car. Her estimate is entirely her own and will likely differ from that of her classmates. Everyone will own a different answer, then, even though they’ll all be developing proficiency with the same mathematical tools. Everybody wins.
• If you’d like to keep track of all the three-act tasks I’ve released so far, I have them logged in this spreadsheet, which is really insufficient but there it is.