Describes an experiment designed to augment textual materials conducive to the inquiry approach to learning. The experiment is the culminating experience in a series designed to illustrate the fundamental nature of the atom: its quantized energy nature, its electrical nature, and its combining ability. (Author/GS)

Describes an experiment for recording holograms using a minimum of costly apparatus. Includes a description of apparatus and materials, the procedure for recording the hologram, the processing of the hologram, and the reconstruction of the image. (GS)

Describes an undergraduate experiment. Discusses a model for the behavior of bubbles under differing viscosities and pressure gradients and conditions for failure of the model. (GH)

Describes a method for the determination of the velocity of sound using a dual oscilloscope on which is displayed the sinusoidal input into a loudspeaker and the signal picked up by a microphone. (GS)

Presents a flowchart that is used in the elementary qualitative analysis of a single salt. (GS)

REFERENCES TO BIOLOGICAL EXPERIMENTS THAT EMPHASIZE THE USE OF RADIOISOTOPES AS TRACERS ARE INCLUDED IN THIS ANNOTATED BIBLIOGRAPHY. MATERIALS INCLUDED ARE CONSIDERED TO BE READILY AVAILABLE AND WERE PUBLISHED AFTER 1960. SECTION I IS COMPOSED OF SELECTED SOURCES. ENTRIES INCLUDE (1) COMPLETE CITATIONS, (2) A BRIEF ANNOTATION, AND (3) LISTS OF…

This collection of student activities for grades four through twelve presents action-oriented experiences with hardy aquatic organisms as the foundation for a laboratory-oriented science program. The format is characterized by pre-lab, post-lab, and student sections. Pre-lab topics include level, concepts, facts, suggested prerequisite skills,…

Subjects judged the behavior of a target person who had helped or not helped a person in distress while the target person was either alone or with confederates who also had helped or not helped. In addition, subjects were told that either (1) 80 percent of all persons tested had helped, (2) 20 percent had helped, or (3) nothing about the…

Performance objectives are stated for this secondary school instructional unit concerned with aspects of physical chemistry, involving the physical properties of matter, and laws and theories regarding chemical interaction. Lists of films and state-adopted and other texts are presented. Included are enrollment guidelines; an outline summarizing…

This science study aid, published by the U. S. Department of Agriculture and intended as a supplement to the regular science program, lists activities and experiments relating seed germination to various temperature changes and exposure to adverse temperature conditions for varying lengths of time. (CP)

As a result of work performed at the Southwestern Radiological Health Laboratory with respect to lasers, this manual was prepared in response to the increasing use of lasers in high schools and colleges. It is directed primarily toward the high school instructor who may use the text for a short course in laser fundamentals. The definition of the…

Describes an undergraduate atomic absorption experiment in which the iron and manganese concentrations in dry cat food are determined. (MLH)

Describes an organic chemistry experiment that illustrates dimerization, gas chromatography analysis and separation, and the thermodynamic basis for Markovnikov's rule. (MLH)