By using minimal equipment it is possible to demonstrate Faraday's Law. An electronic desk calculator enables sophomore students to solve a difficult mathematical expression for the induced EMF. Polaroid pictures of the plot of induced EMF, together with the computer facility, enables students to make comparisons. (PS)

Reports an investigation to determine whether or not interaction analysis could be used as a tool to analyze laboratory instruction and to identify patterns of instruction which differentiate effective and ineffective teaching. Indicates student performance can be enhanced by a student-centered climate. (Author/TS)

Offers suggestions for teaching some aspects of water economy in plants. These include diffusion/osmosis, water transport, the part played by turgor in structural support, and its implications for plant organs or whole plants. Several practical demonstrations/experiments are also described. (JN)

In a poster session, students explain an experiment with the help of a poster that outlines the experimental procedures followed. Suggestions for preparing posters and conducting poster sessions are provided. A sample poster on the strength of electromagnets is also provided. (JN)

Describes a course used to teach freshwater ecology to graduate and undergraduate students at the University of Michigan Biological Station. Explains how students receive an introduction to lake ecology and work on applied resource management questions concerning local lakes and streams. Gives case study examples. (SB)

Describes a three-part experiment designed to introduce cyclic voltammetry to graduate/undergraduate students. Part 1 demonstrates formal reduction potential, redox electron transfer, diffusion coefficient, and electrochemical reversibility. Part 2 investigates electrochemical behavior of acetaminophen. Part 3 examines such experimental variables…

A PASCAL graphics and instrument interface program for a Z80/S-100 based microcomputer was developed. The computer interfaces to a stopped-flow spectrophotometer replacing a storage oscilloscope and polaroid camera. Applications of this system are discussed, indicating that graphics and analog-to-digital boards have transformed the computer into…

Background information, procedures, and results are provided for a series of graduate/undergraduate polymer experiments. These include synthesis of poly(methylmethacrylate), viscosity experiment (indicating large effect even small amounts of a polymer may have on solution properties), and measurement of weight-average molecular weight by light…