Describes how to modify an electroscope so the charge can not leak out. (LS)

Describes the apparatus and applications of a solar energy study kit suitable for school and college use. (LS)

Describes the design and materials for an elementary school science laboratory which can be installed for approximately $3,000. (MLH)

Describes an undergraduate chemistry laboratory course designed to acquaint the students with the major laboratory instruments, the chemical literature, and methods for writing effective laboratory reports. (MLH)

Describes the experimental apparatus and method for the study of magnetic vector potential (MVP). Includes a discussion of inherent errors in the calculations involved, precision of the results, and further applications of MVP. (GS)

this article presents a way to stimulate the study of some properties of numbers. The number of points on the star to be drawn is predicted using the number of teeth on each wheel, the greatest common factor of those numbers, and the number of teeth in the movable wheel. (Author/KM)

Describes the inexpensive construction of an uptake volume potometer uptake and loss potometer, and experiments on plants that can be conducted with the equipment. (BR)

The teaching laboratory in physics departments in colleges and universities is a source of great potential strength in undergraduate education. Recent surveys and conferences, have identified inadequate teaching equipment and laboratory development. This report reviews these problems and offers suggestions for an enhanced federal effort to solve…

Discusses ways in which teachers can improvise with common household objects and thus avoid the expense of purchasing new science materials. (JR)

Discusses an experiment on friction to illustrate the "law" governing the relationship of the friction force to the volocity of air track cars. (CC)