Summarizes a doctoral thesis that validated a Gagnian learning hierarchy and showed that graphical skills were more quickly learned the greater the guidance that was given, but that there was no difference in retention and transfer between guided and discovery learning of these skills. (AL)

A discussion of the so-called rose curves defined by simple trigonometric functions in polar coordinates. (MM)

Describes a computer program that plots a solid" representation of molecular orbital charge density which can be used to analyze wave functions of molecules. Illustrated with diagrams for formaldehyde. (AL)

The position of Droopy on a rectangular grid was used to motivate learning of coordinates. (MM)

The development of modern theoretical cosmology is presented and some questionable assumptions of orthodox cosmology are pointed out. Suggests that recent observations indicate that hierarchical clustering is a basic factor in cosmology. The implications of hierarchical models of the universe are considered. Bibliography. (LC)

Part I reviews the mathematical definition of function, and then presents some practical uses of functions in such areas as substitution in a formula, equation solving, and curve fitting. Part II gives examples of functions that can be used to describe some real life situations. (RP)

Describes three of many uses to which the desk-top computer has been put in the introductory physics laboratory. The three uses involve an AC circuit laboratory, an equipotential mapping experiment, and an N-slit diffraction experiment. Typical desk-top computer-produced theory plots are shown. (LC)