Archive for October, 2010

Published by Brunsell on 28 Oct 2010

Why are We Failing in History and Science Education?

Joy Hakim in the Washington Post

For a variety of reasons, none good, many of our schools have marginalized the subjects that make you think, the subjects that provide intellectual stretching. History and science—taught as idea-based subjects—give you something to think about. Turning them into rote memorization disciplines gives you a headache.

From the comment section…

We are behind the pacing plan made up by our standards-driven teacher-leader. We have a pretty good textbook, Prentice Hall Chemistry, the 2000 edition. It isn't helpful for the pacing plan, because there is no time to develop any of the ideas in it, and still keep up with the trivial pursuit game of the multiple-choice common quarterly assessments thought up by the lead teacher, based on the quickest way to dispatch the Framework bullets.

 

Chemistry, for me, was the first subject where I could see the material world "make sense". My students today have NEVER had any opportunity to make sense of the avalanche of drivel they are being prepared to test on. Once the test is over, its architects and hangers-on don't care what happens to them at all.  

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Published by Brunsell on 05 Oct 2010

Motivation, Alfie Kohn, & The Office

Published by Brunsell on 04 Oct 2010

The Ghost Meter

(via Frank Noschese: http://twitter.com/fnoschese)

The "Ghost Meter" EMF Sensor is available for $30 from Amazon.com

Product Description:

The Ghost Meter has been calibrated to ignore the extremely subtle EMF emissions surrounding the human body, yet is still sensitive enough to detect the small, distinct, erratic EMF energy fluctuations frequently found at reputed haunted locations. The Ghost Meter provides three corroborating indicators of EMF emission strength. A needle based display, LED lights, and an adjustable audio signal. The response time of this meter is excellent, easily outperforming more expensive EMF meters. It can also be operated in silent mode so it doesn't interfere with EVP (Electronic Voice Phenomenon) recordings or distract other investigators during an investigation. Compare the value this meter offers compared to other brands. There is no other offer that comes close to providing these levels of features and performance for the price. You've seen television ghost hunters use similar detectors. Now you can get your own and start investigating the unknown.

Imagine letting kids go wild with this device to map your school or their home. I bet they will be surprised to know that ghosts like to party - they seem to congregate near refrigerators and big stereo speakers!

I can't imagine a better introduction to a unit on electromagnetism…

Posted via email from wcydwt - science

Published by Brunsell on 03 Oct 2010

Wave Pendulum

Really cool….

Top View:

Side View:

Posted via email from wcydwt - science

Published by Brunsell on 03 Oct 2010

I See the Light

What Can you Do With These?

Images of a sodium lamp and compact fluorescent taken through "diffraction grating glasses.

Posted via email from wcydwt - science

Published by Brunsell on 03 Oct 2010

Dashboard Physics

From Dale Basler, via Lab Out Loud: http://laboutloud.com/2010/06/a-dashboard-physics-lesson/

For several years I’ve turned my students loose with a rather boring video of my speedometer as I traveled around town.

The best part of this video is that I don’t need to come up with an assignment. I just play the video. It doesn’t take more than a minute for questions to start bubbling out of the students?

  • How long did you do this?
  • Where did you go?
  • How far did you drive?

And there it is. A physics lesson. I send the students off with a challenge: “tell us everything you can about my trip.”

Read on: http://laboutloud.com/2010/06/a-dashboard-physics-lesson/

Posted via email from wcydwt - science