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-----Original Message-----
From: phys-l@lists.nau.edu: Forum for Physics Educators
[mailto:PHYS-L@lists.nau.edu]On Behalf Of Wes Davis
Sent: Saturday, September 08, 2001 2:09 PM
To: PHYS-L@lists.nau.edu
Subject: Re: World's noise
John Clement writes:
Since practically all 6thastronomy
graders are concrete thinkers, they will have much difficulty with
results, including the idea of a rotating earth.
Some recent work indicates that more than 50% of today's college
freshmen
are operating on the concrete level - they do not abstract. Work done by
Jensen,
et al., indicates that many *never* achieve the abstract operations stage.
Many - if not most - of my college astronomy students are
unable to form
a
mental picture of the relationship between the earth, sun and moon.
Wes