Describes the use of a simulation lesson which is written in TUTOR language for the PLATO computer for the purpose of separating a mixture of four ions with known identity. Indicates that students have more freedom to experiment than in laboratories in other traditional computer-assisted programs. (CC)

Describes the use of two polarizing lenses, a yellow filter, an oatmeal bos, a piece of cardboard, a 1,000 ml beaker, and an overhead projector to demonstrate compound optical activity to large classes. Indicates the presence of an accuracy within 1-2 degrees of usually acceptable data. (CC)

Describes the errors in the sugar-cube experiment related to radioactivity as described in Project Physics course. The discussion considers some of the steps overlooked in the experiment and generalizes the theory beyond the sugar-cube stage. (PS)

Describes apparatus which can be constructed to allow students to experiment and collect data for understanding various aspects of simple motion of objects. Detailed instructions are given. (PS)

Describes an experiment designed to expose the student to the classical techniques of organic dye synthesis and introduce him to a variety of modern scientific knowledge and exotic physical phenomena which he might not encounter otherwise. (Author/DF)

Describes use of laboratory techniques for systematic study of river pollution. Detailed instructions are included. (PS)

Exercises are developed which demonstrate the versatility of modern spectroscopic methods and the variety of structural information which can be obtained. (DF)

A teaching aid is described for exercises in plant transpiration and general external morphology which is felt to be a good resource for the teaching of concepts relating to structure and function; in addition it is inexpensive and easily obtainable. (DF)