I have noticed a significant decline over the years in the ability of my students to estimate quantities, and have attributed it to an increased reliance on calculators and computers, but it may be a consequence of more subtle differences in brain development.
This is the second book of chemical demonstrations by Herbert Roesky that I have purchased. The first, "Chemical Curiosities: Spectacular Experiments and Inspired Quotes" should have been a Hal's Pick when it was published in 1996.
The whole idea of IQ as a measure of intelligence has been roundly criticized by scientists such as the late Stephen J. Gould ("The Mismeasure of Man"), but tests continue to be given, and scores recorded in "permanent records". Do they have any significance and, if so, what is it?
One might expect that an especially memorable chess match would have been a world championship game, or at least a tournament competition. However, one of the most famous matches ever played was an exhibition that had no significance for any competition.
We teachers of science tend to assume that our students are largely rational - that they can be brought to understanding through a gradual accumulation of experiences that lead to conclusions about how the world works, and that nature can be led to disclose herself through a logical process.
It's about time that somebody should write this book, and there is no better "somebody" for the job than Edward Tufte, author of thoughtful and beautiful books about the presentation of scientific data (see Hal's Picks for August, 1998 and
I usually avoid writing in this space about materials that one might use directly in the classroom, since I am trying encourage teachers to expand their scope. However, this two -volume set recently published by the Royal Society of Chemistry is enough to make me change the rules.
"A Friend of the Earth" is a novel that alternates in time between the near-present and about twenty-five years in the future, when the worst nightmares of the environmental movement have come to pass. Global warming has turned Southern California into a terrible place to live; violent storms alternate with 130 degree days.
This report is potentially very important. On the other hand, it could have no impact whatsoever. If Washington reads the Commission findings and recommendations, and funds the five billion dollar programs it recommends, science and mathematics education in the United States could get the "shot in the arm" that it so desperately requires. "A Nation at Risk" was published in 1983.