Explains the procedures used in a general botany course to obtain polarization, fluorescence, and dark field images using a standard student microscope. Provides sources for materials and references. (JM)

Methods of collecting, isolating, and culturing microscopic and macroscopic marine algae are described. Three different culture media list of chemicals needed and procedures for preparing Erdschreiber's and Provasoli's E. S. media. (BC)

Hypothesizes that overloading the working memory may leave no space for thought and organization such that faulty (or even no) learning takes place. Provides examples of this hypothesis and possible remedies. These remedies focus on design of laboratory manuals and equipment and on curriculum content order. (JN)

Objectives, materials needed, procedures, discussion questions, and follow-up activities are provided for five experiments. They include (1) testing for sugars; (2) comparing sugar to artificial sweeteners; (3) chewing gum scientifically; (4) soap making; and (5) making toothpaste. (JN)

The relationship between multicultural education and cultural awareness is explored in this article. Multicultural education is shown to be a general philosophy, with cultural awareness being a component. A Cultural Literacy Laboratory designed to help participants grow toward multicultural understanding is discussed. (DF)

Peroxides are unstable, shock-, thermal-, and friction-sensitive compounds whose sensitivity increases with concentration. In addition, peroxides can form in aging organic solvents and stored alkali metals. Cautions related to storage, use, and disposal of peroxides in the secondary school chemistry laboratory are discussed. (JN)

Provided are procedures and list of materials needed to demonstrate that the pressure inside a container with a porous surface can be changed due to the rate of diffusion of low molecular weight gases. Typical results obtained are included. (JN)

Describes a laboratory investigation designed to analyze surface area to volume ratio related to cell division. Uses agar-gel "cells" with pH indicator added which are then "fed" acid for a measured time. Discusses procedures and materials used, providing a sample data table and important guiding questions. (JM)

Measurement of harmonic amplitude and phase response are discussed, focusing on an instrument used to demonstrate motion of a damped system when oscillating freely and motion of the same system when driven into harmonic oscillation. Includes procedures, sample results, and comparison of results to values calculated from geometry of the system. (JM)

Describes a soap bubble motor, house insulation models, using hot-water bottles as heat sources, solar mobile, surface tension boat, evaporative cooling experiments, six activities on heat, and a magic trick based on friction. Also discusses using the Cambion Electronics Kit to introduce junior high students to the subject. (JM)

Presented are abstracts of five papers on teaching materials/methods presented at the 35th annual meeting of the American Physiological Society. Topic areas include expert system used as a teacher/consultant in hemostasis problems, computer assisted testing, and excitation/conduction properties of membranes as illustrated by the compound action…

A laboratory experiment that involves solving problems with conflicting evidence or inconsistent data. The experiment gives students opportunities to reason as scientists. (EB)

Describes an experimental biochemistry course designed to teach basic biochemical techniques using an unstudied enzyme as the experimental material. Explains the schedule of experiments designed for the course and lists the sources used. (GS)

Described are eight chemistry experiments and demonstrations applicable to introductory chemistry courses. Activities include: measure of lattice enthalpy, Le Chatelier's principle, decarboxylation of soap, use of pocket calculators in pH measurement, and making nylon. (SL)

Described is a secondary level physics laboratory course designed to teach analytical thinking. Included is an analysis of a typical activity requiring the student to create and complete his own experiment. (SL)