Describes the methods used in a general-biology course at the College of Mount Saint Vincent and Manhattan College (Riverdale, New York) in which a problem solving approach is used in conjunction with the audiotutorial method of instruction. (JR)

Describes the construction and operation of an automatic insect dispenser suitable for feeding small vertebrates that are being maintained for behavioral experiments. The food morsels are squirted from their chambers an an air jet, and may be directed at a particluar portion of the cage or distributed to different areas. (JR)

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.…

Describes a circuit which can produce patterns consisting of epicycle curves. The appearance and mathematical nature of some of the patterns is explained. Details are given for the conversion of an oscilloscope to display the patterns demonstrating the practicality of such experiments in most introductory physics laboratories. (JP)

Summarizes results of two questionnaire studies on student evaluation of courses and instruction, respectively, conducted in the Chemistry Department at the University of Wisconsin-Madison and by the Committee on Undergraduate Teaching of the Division of Chemical Education, The American Chemical Society. Included are two samples of the…

Summarizes a survey of students' criteria for favorable and unfavorable responses to teaching evaluation questionnaires, involving results from 40 undergraduate and 15 graduate students. Indicates the dependence between the student's expectations upon entering a course and his acquired experience upon its completion. (CC)

Presents a brief description of six new tests released by the 1974 testing program and condensed norms for six others published during the 1971-73 period. Included is a list of tests featured in this year. (CC)

Discusses the use of an ideal gas model to explain osmotic equilibrium and nonequilibrium flows through an ideal semipermeable membrane. Included are a justification of the relationship between an ideal gas and a dilute solution, a review of the irreversible thermodynamic flow, and some sample applications to physiology. (CC)

Describes several sources of error in a sampling and analysis procedure for oxides of nitrogen from stationary sources (Method 7, Federal Register, 1971), and provides methods for resolving these errors. (JR)

Reviews current research interests in photographic chemistry, involving two proposed models for spectral sensitization of crystal defects and impurities in the photolysis reactivity and the mechanisms of development and complexation. Establishment of photographic chemistry in a chemistry curriculum is recommended. (CC)

Contained are five questions related to chemistry and ecology. Satisfactory answers to these five questions are included. (RH)