Describes the National Science Teachers Association's Every Teacher a Researcher (ETR) program as a way for teachers to get involved in research on the use of science laboratories. Includes a general description of the program and an application form. (CW)

Presents investigations to explore the substrate specificity, pH, concentration, and temperature relations of an enzyme with only inexpensive commercial rennet and basic laboratory equipment. Describes how the activities were carried out with a group of 15-year-old students. (CW)

Describes a demonstration of a practical application of electrochemistry. Discusses the set-up, materials, and theatrical attributes of this demonstration. (CW)

Describes a simplified redox method for total iron analysis suitable for execution in a three-hour laboratory period by general chemistry students. Discusses materials, procedures, analyses, and student performance. (CW)

Illustrates the scope of experimental investigations for biochemistry education in high school biology and chemistry courses. Gives a brief overview of biochemistry experiments with proteins, enzymes, carbohydrates, lipids, nucleic acids, vitamins, metabolism, electron transport, and photosynthesis including materials, procedures, and outcomes.…

Presents a series of four applications of data acquisition, system control, and data analysis using personal computers. Covers topics of pilot plant information and control, automation of drug safety evaluation, analysis and characterization of petroleum resources, and high-speed analog-digital conversion connections. Part three of a series on…

Describes safety practices for laboratory fume hoods based on certain assumptions of hood design and performance. Also discusses the procedures in preparing to work at a hood. A checklist of good hood practices is included. (JM)

Factors affecting traditional laboratory instruction in chemistry are discussed. They include: responses to potential hazards in the undergraduate laboratory; student distaste for laboratory classes; equipment and chemical costs; lack of qualified teaching assistants; and faculty pressures to do research. New directions for introductory…

Outlines the objectives, materials, and procedures in performing a student laboratory experiment that demonstrates sodium transport in frog skin. (CS)

Reported is a method of producing artificial lightning in an ordinary clear lightbulb. The appearance of sparks produced is that of a miniature stroke of forked lightning seen in natural thunderstorms. The sparks also show the intricate branching patterns often seen in natural lightning. (JT)

An observational instrument called the Laboratory Interaction Categories-Student (LIC) is described. The LIC is an easily understandable and usable tool for assessing pupil laboratory performance. (MP)

Discusses an addition to an apparatus which allows the effect of temperature on a paramagnetic compound to be measured, therefore demonstrating the Curie-Weiss law. The experiment can be used as a demonstration or student experiment to stimulate discussion of magnetic susceptibility and ligand field trips. (Author/JN)

Summarizes the advantages in using the Daedalon Air Table, which supplies compressed air to the pucks instead of the table surface itself. Describes methods for constructing an electronic null detector using a Weston type galvanometer and an integrated circuit operational amplifier. Also describes a redesigned and improved sound-level meter. (CS)

Presents three different procedures in which reagents are added in a specified order to a large beaker containing an aqueous solution of nickel sulfate. Complex ions of nickel (II) are prepared by using aqueous solutions of ammonia, ethylenediamine, dimethylglyoxime, and cyanide ion. (CS)

Describes a slide presentation method for preparing graduate students as lab instructors for engineering courses. The course may not only reduce faculty training time but also provides continuity in quality and content of instruction. (DS)