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Larry Gladney and Dennis DeTurck

Notes for Instructors

Larry Gladney is Associate Professor of Physics and Dennis DeTurck is Professor of Mathematics, both at the University of Pennsylvania.

While the focus of these modules in Math and Physics is on conceptual learning, a great deal of the "utility" of introductory courses in calculus and physics is in developing problem-solving skills. Hence any textbook has many traditional examples of problems and many more exercises for the student than are presented within these modules.

A proper introduction to problem-solving starts by being reminded that the essence of scientific progress since Galileo is in experimenation and experimentation is founded on quantitative measurement.

As an example, consider the pictures below. They show two scenes of a girl walking a cow to pasture while simultaneously holding a kite on a windy day. Which of the two scenes are you more likely to see on a March day in Pennsylvania farmland?

 girl walking a cow  girl walking a flying cow

Hard as it is to believe, the general principles of physics embodied in Newton's Laws do not, of themselves, preclude either scene from happening. These laws, when coupled with physical intuition as to the masses of objects, do give us a firm indication as to the likelihood of the second scene compared to the first. With that in mind, we can start to look from our qualitative view of how things should move to the techniques for considering quantitative determinations of their motion.
Published July 2001
© 2001 by Larry Gladney and Dennis DeTurck


Larry Gladney and Dennis DeTurck, "Problem-Solving," Convergence (November 2004)