Details construction of an inexpensive electronic auditory device in which the resistance in parallel with the device is inversely proportional to the frequency of sound produced. (CP)

Describes an experimental project on boomerangs designed for an undergraduate course in classical mechanics. The students designed and made their own boomerangs, devised their own procedures, and carried out suitable measurements. Presents some of their data and a simple analysis for the two-bladed boomerang. (Author/MLH)

Presents two calculations of the probability of detection of an interstellar comet, under the hypothesis that such comets would escape from comet clouds similar to that believed to surround the sun. Proposes three problems, each of which would be a reasonable term project for a motivated undergraduate. (Author/MLH)

Presents a report of the annual conference of the Education Group of the Institute of Physics, held at the University of Oxford. The educators agreed that project work is a useful teaching technique and that there is a need for categorization of such activities. (MLH)

Describes an iron-thionine photogalvanic cell designed, constructed and tested by a secondary school student. (PB)

Describes a secondary project in which students must organize an expedition to settle the people of the Earth on a new planet. (MLH)

Presented is the annual report for fiscal year 1975-76 of the National Academy of Sciences (NAS), including the annual reports of the National Academy of Engineering and the Institute of Medicine. Contents include: (1) report of the President; (2) reports on completed studies including food and nutrition, public health, natural resources, space…

The purpose of this booklet is to bring into the classroom the ecological processes and principles that underlie nature. Students get the opportunity to work with natural objects and to learn about the principles that regulate them. In this revised edition, a number of publications have been compiled and printed under one title. The booklet is…

This publication is a collection of 77 projects which have been designed for secondary science students. The main purpose of the publication is to illustrate what a school technology project is and how it relates to the rest of the curriculum. Some of the projects are investigations while others have the construction of a device as their main…

Alaska is one of the most ideal settings for teaching science. In most of the rural areas, science materials are in abundance starting almost at the school's door steps to a distance as far as a person would like to go. Therefore, it is quite possible to develop science projects for all grades. Some of the projects can be done in the simplest ways…

This teacher's guide has been written for the elementary classroom teacher as an aid and not as a course of study. The guide lists units of study that might be undertaken in any classroom and indicates objectives, activities, teaching aids, and reference materials that will be helpful in the development of the unit. Topics covered include…

Sixth-grade pupils at St. Vivian's school recently studied a science lesson on distinguishing between plant and animal cells. Observation of pupils indicated that learning was occurring, but the enthusiasm they had exhibited in earlier science lessons was obviously lacking. Article discussed a model, designed to stimulate learning processes, from…

A high school student builds a simple drive mechanism for making extended photographic exposures of star clusters. Second and third place winner's projects are described. (EB)

Describes a chemistry project in which lichens are identified by the analysis of the phenolic substances that they biosynthesize. (MLH)