Suggests that the origins of words, which have faded over time through technological advancement, should be studied with an interdisciplinary approach. Samples of words are listed with their former and present meanings. (SA)

Presented is a community's experience with a lunar sample education kit containing actual pieces of moon rocks and soil on loan from NASA. School and community activities including mini-labs, seminars, and lunar sample viewing sessions, are described. (SA)

Directions are given for construction of an astrolabe capable of yielding two celestial coordinates: altitude and azimuth. Potential uses are included for both young and older children. Quantitative measurement activities related to celestial motion and position are given. (SA)

A modification of the Ames test for detecting carcinogens and mutagens using a strain of bacteria is described. A suggestion is given for checking the correctness of procedures by using particular hair dyes which have been shown to be mutogenic. (Author/SA)

Three derivations of the complete discharge time of a capacitor through a resistor are reviewed and examples of potential interest in the classroom are given. (Author/SA)

Presents two demonstrations which are intended for chemistry college students. These demonstrations are: (1) enhancement of concentration quenching by micelles; and (2) the thermite lecture demonstration. (HM)

Describes the collection, care, and maintenance of protozoa by elementary school students. Techniques for collecting and observing them are given. (SA)

Describes an elastic Foucault pendulum designed to demonstrate how the rotation of the plane of oscillation depends on geographical latitude, and shows that this rotation vanishes at the equator. (GA)

Describes a pendulum in which the spherical bob can roll on a track of the same arc as it swings when suspended by a cord. Comparison of the motion in the two mentioned cases shows the effect of rotational kinetic energy when the bob rolls. (GA)

Describes how to measure Brewster's angle using Polaroid sunglasses and the reflection of the ceiling light on a polished floor. (GA)

Describes a 10 week Saturday program in open-ended, hands-on science activity. Sessions emphasize three stages of learning: (1) messing about with concrete materials; (2) introduction of new equipment and probing questions; and (3) large group sharing session. Discusses the teacher's role and extended activities. (MA)

Describes a creative art activity in ecology involving the creation of an aquatic environment using construction paper, pipe cleaners, yarn, tissue paper, felt-tip pens, and glue. (MA)

Describes life science activities for blind or visually impaired students including aquarium studies, plant germination, classroom animals, and outdoor activities designed with a multisensory approach. (MA)

Presents activities that can be done to help preschool and primary age children discover some of the properties of snow. Includes questions to ask the children during the activity. (MA)

In this experiment, the student duplicates the experiment reported by Wohler in 1828. (BB)