Discusses the philosophy and operation of a self-instructional laboratory at MIT which utilizes visual materials reinforced by audio tapes and is designed to give the student a taste of how to collect, display, and interpret data. Indicates that the approach results in the flexibility needed to serve self-paced courses. (CC)

Discusses the design and operation of a high Q acoustical resonant chamber which can be used to demonstrate wave phenomena such as three-dimensional normal modes, Q values, densities of states, changes in the speed of sound, Fourier decomposition, damped harmonic oscillations, sound-absorbing properties, and perturbation and scattering problems.…

Discusses the controversy about the discovery of element 72, involving Urbain's isolation of celtium, Dauvillier's reexamination of celtium samples, and Coster and Hevesy's announcement of the existence of hafnium. Indicates that the Copenhagen workers are finally accredited for the element discovery in their x-ray spectral studies. (CC)

Study was concerned only with the impact of tutoring on the tutor's learning and attempted to determine whether tutors cognitively restructure the material in anticipation of teaching it to someone else. (Author/RK)

Discusses the curriculum of "Introduction to Genetics" of the Unitversity of Freiburg, West Germany. (DD)

Research supported by a grant from the National Institute of Health. (DD)

Ten- and 11-year-old boys and girls were taught to solve Inhelder and Piaget's pendulum problem and the results of the experiment replicated their expectation that unaided 10- and 11-year-olds do not often solve the pendulum problem. (Editor/RK)

A brief summary of the state of agricultural research in the United States. The agricultural research system is finely attuned to the immediate needs of its clients, as evident in its response to the attack of corn blight in 1970. (JR)