Comments on: What Can You Do With This: EXIF

By: David

David — Sun, 30 Nov 2008 06:27:44 +0000

Am I the only one who had difficulty perceiving the image? All I could see was a meter stick and a green blur until I scrolled down and read the discussion. :(

By: dy/dan » Blog Archive » The Rule Of Least Power: An Initial Approach

dy/dan » Blog Archive » The Rule Of Least Power: An Initial Approach — Thu, 27 Nov 2008 18:38:28 +0000

[…] example, if a textbook were to repurpose my last What Can You Do With This? prompt, it would run like […]

By: Mr. K.

Mr. K. — Thu, 27 Nov 2008 14:23:53 +0000

It must be a middle school math thing.

The question I want to ask is “How long after the ball was dropped was this picture taken?”

By: dan

dan — Wed, 26 Nov 2008 05:43:04 +0000

FYI to the commenters here: I added a summary judgment to the post itself. Thanks for the ideas, everyone.

By: Jason Dyer

Jason Dyer — Tue, 25 Nov 2008 21:57:10 +0000

I’m most interested in the fact that the amount of exposure the ball had was longer at the top than the bottom (giving a visible effect) because the the acceleration changed the velocity.

By: Alby

Alby — Mon, 24 Nov 2008 17:34:09 +0000

Ooh ooh! Introduce (spontaneous) symmetry breaking! You can’t tell whether the ball is rising or falling so it’s symmetric in time.

By: Scott Elias

Scott Elias — Mon, 24 Nov 2008 03:25:48 +0000

Dan – The last thing I typed in version 1.0 of my response was, “Given some time, I’m sure I could make an actual lesson out of this…”

That’s the hard part, indeed.

By: Bryan Cook

Bryan Cook — Mon, 24 Nov 2008 03:07:34 +0000

Sorry that this is an unrelated comment, but I’m just getting started with a teaching blog of my own. As part of my learning process, I’ve been advised to “audit” some well-written blogs, and I chose yours as my first audit. Your site is recommended on my blog, and I’d love to have you take a look at it and comment with your thoughts on my page at your convenience.
Unfortunately I don’t think I have ANY readers yet, but perhaps your goodwill can pay off in the future once I become rich and famous in the blogosphere ; )

By: Tom

Tom — Mon, 24 Nov 2008 02:19:48 +0000

I’d give them the height of the drop and have them calculate the exposure time. The for extension have them graph exposure time vs height to achieve the same length of blur.

I think that’d work.

By: Kate

Kate — Mon, 24 Nov 2008 01:43:05 +0000

My first thought seeing the picture was "Time Warp"! Most of it consists of filming things with expensive cameras that look cool when you slow them way down. Then they spend 10 seconds on a token physics lesson, then they show more cool stuff. Kind of like Mythbusters or Good Eats, I'm always looking for excuses to incorporate clips into class.