Provides analytical and experimental comparisons of calculations in which the vertical trajectory of a model rocket is determined. (CP)

Provides a chronicle of the work of Miss Leavitt in the field of variable stars during the early part of the 20th century. (CP)

Describes the theory and operation of a demonstration which shows the effect of the inclination angle on the range of a projectile. (CP)

Provides a method by which students with different levels of ability may be taught on individual basis by one instructor. A pretest, skill session, and retest format are described. An appendix lists programmed materials in basic and advanced skills which are available. (CP)

Reports on a method of determining the coefficient of friction of an object through the use of a record turntable. (CP)

Describes the operation and educational benefits of the use of a closed circuit television system in the demonstration of a hologram. (CP)

Provides directions for a three person rotating reference system. A series of experiments used with the apparatus is also described. (CP)

Illustrates the phenomenon of the "difference tone" in music, using simple physics. Describes how this phenomenon can be demonstrated with a flute. (MLH)

Discusses aspects that are often lacking in preservice training for high school physics teachers. Lists ten features of a preservice program that would enhance physics teaching, including laboratory-centered training, the history of physics, inquiry skills in science, and a familiarity with high school physics curriculum programs. (MLH)

Describes a course, taught in Jamaica, for prospective high school physics teachers that stresses concepts which are difficult to teach and easily misunderstood by students. Also stresses preparing high school students to take national exams and teaching physics in poorly equipped laboratories. (MLH)

Presents a version of the periodic chart in which the elements are placed in concentric circles and lobes based on the modern knowledge of nuclear and atomic structural relationships. (MLH)

Describes a demonstration using a heated wire to illustrate the phase change from the body-centered cubic form of iron to the face-centered cubic form. (MLH)

Presents a derivation of the centripetal acceleration formula which does not involve calculus or vectors but uses only simple geometry. (MLH)

Describes a set of audiovisual materials entitled "Women in Science," which includes audiotaped interviews with six women scientists, accompanied by 35-mm slides and an article about each scientist. (MLH)

Describes a demonstration which illustrates that a body moving with constant speed can be accelerating. The students ride in a circle on a cart made with plywood and roller skates and equipped with bubble accelerometers. (MLH)