Describes an undergraduate chemistry experiment which utilizes small samples of Californium 252 as a neutron source for the activation of 12 other elements. The students prepare decay curves of the radioactive isotopes and perform nondestructive activation analyses for gram amounts of some elements. (MLH)

Describes a procedure for teaching undergraduate instrumental analysis laboratories to help minimize student confusion about the instruments. Handouts are distributed prior to the experiments and a thorough discussion of the instruments is given at the beginning of the experiment, followed by a demonstration of the instrument by the instructor.…

Describes and compares three analytical methods of interpreting constant acceleration data from a stroboscopic picture or spark record. (CP)

The treatment group of first-graders received audio-tutorial instruction in the particulate nature of matter; the control group received audio-tutorial instruction in a nonscience subject. The treatment group used a particulate model to explain the nature of smells much more effectively than the control group. (MLH)

Suggests that Experiment 13.2 (c) of the Nuffield 0-Level Chemistry Course be banned since the oxidation of lithium under very humid conditions can cause an explosion. (LS)

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)

Describes the life cycle and control of the greenhouse whitefly. Explains the culture of the whitefly for school use and presents a list of laboratory exercises that can be done in a double period. (GS)

A pair of experiments, appropriate for the lower division fourth semester calculus or differential equations course, are presented. The second order differential equation representing the equation of motion of a simple pendulum is derived. The period of oscillation for a particular pendulum can be predicted from the solution to this equation. As a…

Describes a number of activities designed to assist student understanding of the phenomenon of light bending when it passes from one meduim to another. (JR)

Describes the sturcture and asexual reproduction of the fungus Pilobolus and outlines a number of experiments with this organism that are suitable for secondary school biology students. (JR)

Describes a computer program which permits students to check their calculations while they are still in the laboratory by entering their raw data and calculated results via a teletype terminal situated in the lab. The input is examined and the student is informed of the nature of each error. (MLH)