April 2012 Archives

A week of student electrodermal activity

Obviously, this is just one student and doesn't necessarily generalize, but I love that the electrodermal activity is nearly flatlined during classes. ;-) (Note that the activity is higher during sleep than during class...)

"Changes in skin conductance at the surface, referred to as electrodermal activity (EDA), reflect activity within the sympathetic axis of the Autonomic Nervous System (ANS) and provide a sensitive and convenient measure of assessing alterations in sympathetic arousal associated with emotion, cognition, and attention."

From:

Poh, M.Z., Swenson, N.C., Picard, R.W., "A Wearable Sensor for Unobtrusive, Long-term Assessment of Electrodermal Activity," IEEE Transactions on Biomedical Engineering, vol.57, no.5, pp.1243-1252, May 2010. doi: 10.1109/TBME.2009.2038487 PDF

Old school knowledge

I have some amazing friends who tell me that when they were young, they read the dictionary from cover to cover. Other friends of mine have read the entire Encyclopedia Britannica.

My sister calls me an "interest driven learner." I think that's code for "short attention span" or "not a good long term planner" or something like that. I can't imagine being able to read the dictionary from cover to cover. In fact, I don't think most people could sit down and read the dictionary from cover to cover.

Although reading the dictionary and the encyclopedia from cover to cover may seem a bit extreme, it often feels like that's what we're asking kids to do who go through formal education.

Courses are organized, sequenced in a very structured way as student scurry from class to class sitting through lectures and expected to pay attention as instructors go on and on about calculus, history and grammar.

Students with the ability to focus and motivate themselves either through the need to achieve good grades or through understanding the long term benefits of a good education are able to succeed.

Personally, I find the dictionary, the encyclopedia and videos online as excellent resources when I need to learn something. I find the need to learn things every day in the course of pursuing interests, preparing for meetings and interacting with exciting people. I'm extremely motivated to learn and I learn a lot.

I love the videos of professors, amateurs and instructors putting their courseware online. They are a great resource for interest driven learners like me. However, I wonder whether we should be structuring the future of learning as online universities where you are asked to do the equivalent of reading the encyclopedia from cover to cover online. Shouldn't we be looking at the Internet as an amazing network enabling "The Power of Pull" and be empowering kids to learn through building things together rather than assessing their ability to complete courses and produce the right "answers"?

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