Doodling in Math Class

Doodling in Math Class 1This is a brilliant video introduction to the fine mathematical art of doodling.

http://www.youtube.com/watch?v=heKK95DAKms

This video–one of several from vi hart–is an engaging, witty, and serious look at the mathematics one can explore just by doodling and playing around with a few basic ideas.  Sophisticated concepts in graph theory and knot theory spring up from some very simple, and very beautiful, sketches.

The creator of the videos is a bit hard on math teachers in her narration; apparently she’s had some bad ones.  The snarkiness definintely adds character to the videos, but it’s a bit excessive at times.

I’m sure it isn’t easy making innovative, mind-opening videos like this, but it isn’t easy teaching a class full of doodling students, either!

Yesterday in Triangle Appreciation

I woke up today quite upset that I had missed Triangle Appreciation Day.

Yesterday’s date, 12/10/10, should have been the perfect occasion to celebrate the 12-10-10 triangle:

10-10-12 Triangle

Rueful that I had missed the opportunity, I thought to myself “Better late than never”, and started to extol the virtues of this fine isosceles triangle.  But after working for a bit and experiencing some deja vu, I realized that I had already done this:  on 10/12/10!

So, I guess I was early, rather than late.  Happy belated Triangle Appreciation Day!

Efficient Ticket Hypothesis

ticketsIn a past post, I wondered how a local museum theater could make money showing movies to limited audiences.  Well, here is a step in wrong direction, business-wise, anyway:  the $0.00 ticket.

All kidding aside, Free Fridays are a great way to get people into the museums, and it’s probably pretty good for business overall.  The MoMA was packed with people, and the gift shop–and it’s $40 photobooks and $23 T-shirts–was equally occupied.  An interesting question is then “How much does the museum make on each $0.00 ticket?”

An uninteresting question is “why didn’t the security guard just let me in without a ticket, instead of demanding that I go grab two from a big pile on the front desk and then not collect the tickets from me anyway?”

It was enough to make me consider asking for my money back.

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