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Deanna Cullen's picture

MOSART Tests

Mon, 10/28/2013 - 13:09 -- Deanna Cullen

The MOSART tests are designed to measure understanding of science concepts. The name, MOSART, stands for:

Misconceptions-Oriented Standards-based Assessment Resources for Teachers

 

Deanna Cullen's picture

Beyond Benign

Thu, 10/03/2013 - 12:59 -- Deanna Cullen

Environmental studies can be included in any science curriculum.  Whether you are looking for lessons to incorporate ideas related to "green chemistry" or you are looking to use safer methods and materials in the laboratory, you will find many great resources at this site.  There are new labs and also replacement labs for some of those familar activities that we shouldn't be doing anymore.   Th

Hal Harris's picture

Life's Ratchet: How Molecular Machines Extract Order From Chaos

Tue, 04/30/2013 - 21:09 -- Hal Harris

Peter Hoffman is a physicist and materials scientist, and he brings those perspectives and sensibilities to the description of how life converts chemical energy into order and motion.  The "Ratchet" in the title is Feynman's Ratchet, a gedanken experiment described in Feynman's "Lectures on Physics" and reminiscent of Maxwell's Demon.

Hal Harris's picture

Flights of Fancy

Sun, 01/02/2011 - 01:00 -- Hal Harris

One cold morning last week, as I was out to pick up our newspapers, a group of perhaps 250 starlings took off from a neighbor's trees, rose as a mass, wheeled a couple of circles in the air over the trees and settled in other trees nearby. There were no predators in evidence, so iIt was not clear what made them fly or how they decided when and where to land.

Hal Harris's picture

Trick Or Treatment: The Undeniable Facts About Alternative Medicine

Tue, 11/02/2010 - 02:00 -- Hal Harris

"Trick or Treatment" is a critical (very critical) examination of several varieties of alternative medicine. I was surprised to see Simon Singh as lead coauthor of a book about health because I know him as author of a book about math, "Fermat's Enigma", that I recommended in December of 1999. I thought it was the best science/math book of that year.

Hal Harris's picture

Bad Science: Quacks, Hacks, and Big Pharma Flacks

Mon, 11/01/2010 - 01:00 -- Hal Harris

I am a fan of Ben Goldacre's "Bad Science" column in The Guardian. Several hundred of his articles are available free online at http://www.guardian.co.uk/science/series/badscience. His pieces are always well-researched and well-reasoned, and he writes with flair and wit. This slightly edited collection of his essays has recently been released in paperback in the US, after having been on the market in the UK since 2008.

Hal Harris's picture

Mammogram Math (The Way We Live Now)

Wed, 12/02/2009 - 01:00 -- Hal Harris

Imagine a highly reliable cancer test. It detects 95% of a certain type of cancer, and has a "false positive" rate of only 1%. This test is used on a population in which this type of cancer occurs in 0.5%. One day your doctor tells you that you have tested positive. What is the chance that you are actually sick? Surprisingly, it is only about 32 percent!

Hal Harris's picture

Life Ascending: The Ten Great Inventions of Evolution

Sat, 08/01/2009 - 01:00 -- Hal Harris

When I saw this new book on the subject of evolution, I thought it would probably be one side or the other of the very tired evolution/creationism-"intelligent" design debate. I was delighted to find instead a very smart discussion of the status of our understanding of the origins of life, how life has changed over the millennia, and how we have learned about those things. Mr.

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