You can't see, smell or taste air - but here's an easy method for experimenting with it. (Editor)

For teachers only - a monthly exchange of tips, projects, ideas and resources. (Editor)

This paper describes the construction and use of a simple salinometer. The salinometer is composed, mainly, of a milliammeter and a battery and uses the measurement of current flow to determine the salinity of water. A complete list of materials is given, as are details of construction and operation of the equipment. The use of the salinometer in…

The function, design, and ground station requirements of the AMSAT-OSCAR non-commercial space satellite system are described, and various experiments designed for direct student participation in space communications are provided in this text primarily written for the science educator. Six chapters include: (1) an introduction to general satellite…

This module is designed to give the learner an understanding of the nature of light and how its properties are used in the design of spectrophotometers. Problems promote the use of spectrophotometers in qualitative analysis, the optical elements used in a monochromator, and the physical properties of the prism and the diffraction grating. Other…

The twenty experiments in this text have been designed to give the scientific glassblowing technician the opportunity to use scientific glass apparatus in the study of physical science. Primary emphasis of these experiments is on the practical application of the physical science program as a working tool for the scientific glassblowing technician.…

Various approaches to the standardization of pH meters are compared and the limitations of each are pointed out. (BB)

Tests of the predictivity of the biorhythm theory using 30 staff members of a psychiatry service and 50 patients of a college health center showed low correlations between the observed and predicted feeling states. Most were not statistically significant. (BB)

This course presents the student with a performance approach to biology. Each technique is covered in standard lecture format and in guided, independent laboratories. Examinations and grading are competency-based and require knowledge of both the use and limitations of the techniques. (BB)