Discover the unexpected magic of science! |
We need to make clear that
math sees patterns of
patterns?
Devlin's "fourth-level"
of abstraction and Piaget's "formal operational" insight.
"We regularly saw "speed," "velocity," and "acceleration" confused.
Often writers referred to the gravitational acceleration, 9.8 m/s2,
as "gravity" or "the force of gravity." Cause and effect were frequently
backwards as in "an acceleration is a change in velocity that results from
speeding up, slowing up, or changing direction." Note the use of
"change in velocity" instead of the correct "change in velocity with respect
to time." That imprecision was a common error. One text reported
that an object is a force, rather than exerts a force."
from "Middle-School
Texts Don't Make the Grade"
by John Hubisz, Physics Today, May, 2003, pp 50-54 . The above link is dead (June 2005): try the link below, instead. http://www.compadre.org/psrc/items/detail.cfm?ID=1289 Middle School Physical Science Resource Center |
Substantial progress toward solving these
problems
has been made by the Physics
Education Group at
the University of Washington.