Advocates a strong emphasis on the teaching of the design of electronic circuits in undergraduate courses. An instructional paradigm involving the design and construction of a single-transistor amplifier is provided. (CP)

Explains a technique by which three dimensional displays of transistor characteristics can be demonstrated on a cathode ray tube. (CP)

Describes a laboratory experiment, suitable for senior undergraduates, that illustrates energy transfer processes in photochemical reactions. (MLH)

Compares a self-paced laboratory to a conventional laboratory; the students in the self-paced group achieved significantly higher grades and were enthusiastic about the format. (MLH)

Describes several microbiology labs and the maintenance of a bacteria bank for use by all schools in a district. (LS)

Suggestions are made for the achievement of an interesting and successful language laboratory to the student as well as the instructor. (RM)

A study is reported examining language and learning laboratories as they exist today in United States colleges and universities. The study is based on 89 responses to a questionnaire sent to 150 institutions. The type of facility, the technologies available, the disciplines served, and the organizational structures established are examined.…

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

An activity in which students combine physical and mathematical principles in a measurement situation is described. (SD)

Construction of colorful braided polyhedra can provide upper elementary students with enjoyable geometric experiences. (SD)

Twenty-two brief articles describe experiences of teachers in individualizing mathematics instruction at the junior and senior high school levels. Topics include specific activities, record keeping and management, testing and grading, and programs for low achievers and gifted students. (SD)

A salt model was developed as a teaching tool to demonstrate the development of caverns and karst topography. Salt slabs are placed in a watertight box to represent fractured limestone. Erosion resulting from water flow can be photographed in time-lapse sequence or demonstrated in the laboratory. (Author/CP)

Using the basic Bagnold design, a relatively inexpensive suction-type wind tunnel can be constructed for laboratory demonstration of sand-grain movement, ripple development, and other eolian processes. Its simple design provides no workshop problems and it can be made for a total cost in materials of approximately $225. (Author/CP)

Describes the experimental procedure used in determining the lifetime of tantalum-181. (CP)