Can You Guess When The IB Exam Was?

A few years back I posted my physics class notes on a wiki after an email request to keep the notes publicly available. As all good nerds do I watched the traffic with Google Analytics. I'm not here to brag, my site has seen less traffic in 4 years then a successful commercial site sees in a week, but I noticed something interesting the first May that the site was up and running... There was a huge spike in traffic for 1 or 2 days. The same happened the next year. Can you guess when the IB Physics exams are?

If we think our students aren't cramming, we're wrong.

Update: David posted the image to Dan Meyer's 101qs.com. Man, was I wrong, it generated all kinds of questions...

Estimating Gravitational Field Strength

Saw this on Dan Meyer's 101qs.com this evening. What a great photo to clearly show the gravitational field strength on Earth.  I don't like the term "acceleration due to gravity" as its wrong or at best misleading and incomplete, but that's the subject of another post.

This could make a homework assignment and or a great introduction to Logger Pro's video and photo analysis. Plenty to talk about in terms of estimation (of lengths), center of mass, horizontal velocity, etc.

BTW TinEye Reverse Image Search is a great way to find similar photos or in the case above same photo but different resolution.