Describes the structure of a set of computer programs (DITRAN) that translate the text of conversational exchanges appropriate for elementary physics discussions into an operational computer-based dialog. Dialogs produced in this manner are designed as a series of templated subprograms. The structure of a simple template is reviewed. (Author/TS)

Describes the design and development of a method for high school physics instruction which actively engages students in understanding the physical world by constructing and using scientific models to describe, explain, predict, and control phenomena. Presents evidence for the effectiveness of the modeling method. Concludes that effectiveness of…

Demonstrates that if a sinusoidal oscillation of the point of support of a pendulum is approximated by a square wave, a matrix method may be used to discuss parametric resonance and the stability of the inverted pendulum. (Author/SL)

Describes a concrete model for teaching the concepts of reflection and refraction without the use of formal mathematics. The model has been tested in five sections of a physics course for nonscience majors at Towson State University, Baltimore, Maryland. (HM)