A Couple of Updates...

Fermi Lives at Harwoon Union

It's been a busy semester.  A couple of months ago, I received a very nice email from Lisa Therrien and several other teachers at Harwood Union Middle School in Duxbury, VT.  Apparently Fermi fever is catchy, because Ms. Therrien is teaching her students how to make order of magnitude estimates.  I got invited to listen to several of her students describe their estimations over Skype.  It was a very enjoyable experience, and I can truly say that Harwood Union Middle School has some very creative young mathematical minds.  I only wish more teachers incorporated this style of thinking into their math and science classes.


Estimation as a Skeptic's Tool

In addition to Harwood Union School, I also got invited to speak for Ann Arbor Science & Skeptics in October.  It was a great group, and we discussed how estimation can be used as a skeptic's tool. Here's a few of the cool estimates that were suggested by the group:

• How much hair throughout the entire world is grown in one day? (Enough to cover about 10 square miles.)
• What was Forrest Gump’s average speed as he ran across the country? (About 5 cm/s.) 
• If the Sun disappeared, how quickly would the temperature drop on Earth? (About 0.1°C per century if you’re talking about the average temperature of the whole Earth, or about 20°C per day if you’re talking about just the surface temperature.)

The only downer of the trip for me was that I had to admit my secret shame.  I, physicist Aaron Santos, have never actually read a Carl Sagan book.  It's a problem that I will hopefully be remedied in the near future, but for now, feel free to throw your rotten tomatoes.