Compares various nutrient media, growth conditions, and stock solutions used in culturing protozoa. A hay infusion in Chalkey's solution maintained at a stable temperature is recommended for producing the most dense and diverse cultures. (WB)

This booklet outlines general safety procedures in the areas of: (1) student supervision; (2) storage safety regulations, including lists of incompatible chemicals, techniques of disposal and storage; (3) fire; and (4) first aid. Specific sections exist for elementary, junior high school, senior high school, in which special procedures are…

The use of instant agar-free media in high school biology classes is discussed. The synthetic media are relatively inexpensive, heat stable, dependable, and time-saving. (Author/PEB)

Although a complete oxygen meter is an expensive piece of equipment, homemade circuitry can be a suitable substitute if science teachers are aware of the limitations of the apparatus as well as of certain techniques for effective use. (PB)

Recommendations are made for handling and growth of Beneckea natriegens, a rapidly growing, nonpathogenic marine bacterium which can be used with advantage to replace Escherichia coli in many undergraduate microbiology experiments. Examples of experiments and the potential value of this organism as a subject for student research projects are…

This document contains lab activities, problem sets, and a tape script to be accompanied by a slide show. The minicourse covers the following topics of general chemistry: kinetic-molecular theory, the Bohr atom, acids, bases, and salts, the periodic table, bonding, chemical equations, the metric system, computation of density, mass, and volume,…

Presented is advice on how to set up and maintain a saltwater aquarium, and a discussion on everything from algae growth to constructing an underground filter to hatch brine shrimp. Information on which tropical and temperate animals are appropriate for marine aquaria and how to collect them is also included. (Author/SB)

Described is a qualitative analysis laboratory procedure for high school chemistry students. The paper received the Science Teaching Achievement Recognition (STAR) award. The procedure acquaints students with certain ions and uses the knowledge of ions to devise a flow-chart for separating and identifying these ions in an unknown solution. (SL)

Describes urinalysis techniques for dry weight measurement, examination of urinary calculi (stones), and determination of the presence of blood and blood pigments. Also presented are directions for preparing required reagents. (WB)

This document is an instructional module package prepared in objective form for use by an instructor familiar with pH, measurement of pH with a pH meter and maintenance of pH meter electrodes. Included are objectives, instructor guides, student handouts and transparency masters. This module considers the definition of pH, types of electrodes and…

This second volume, a compilation of reprints of experimental notes in physics, was prepared by the American Association of Physics Teachers (AAPT) Committee on Apparatus and by the AAPT Executive Office in response to requests received by the Association for a completely new edition. The goal of the Committee was to provide a selection of…

Reported is a technique for chromosome staining that is simple, rapid, inexpensive, and requires little skill for success. (PB)

Presented is a short discussion of factors causing color changes in animals. Also described is an activity which may be used to demonstrate the response of amphibian skin to a melanophore stimulating hormone in high school or college biology classes. (PEB)

This document presents a series of physics experiments which allow students to determine the value of unknown electrical capacitors. The exercises include both parallel and series connected capacitors. (SL)

The experiments in this manual represent state-of-the-art techniques which should be within the budgetary constraints of a college physics or chemistry department. There are fourteen experiments divided into five modules. The modules are on X-ray fluorescence, charged particle detection, neutron activation analysis, X-ray attenuation, and…