Provided are two informational sheets, one on puffers and one on carrageen (Irish Moss) and two classroom activities, one on buoyancy in fresh and salt water and one on water surface tension. (DC)

An elementary formalism is developed for representing curved space-time which allows transparent qualitative explanation of general relativistic effects and is used to make a conceptual analysis of Einstein's principle of equivalence. A final section outlines a number of student activities. (Author/SK)

Presented are four activities which integrate mathematics and science activities involving problem-solving skills. Topics of activities include derivation of pi (3.14), determining the volume of a bell jar, estimation skills, supplementary exercises using geometric and metric system tables, general laboratory exercises, and supplemental problems.…

Provides instructions and a list of materials needed to demonstrate: (1) a model of the quantum mechanical atom; (2) principles involved in metal corrosion and in the prevention of this destructive process by electrochemical means; and (3) a Thermit reaction, modified to make it more dramatic and interesting for students. (SK)

Provides rationale for and examples of a game (Mastermind) which fosters the development of a systematic approach to problem solving. Includes a brief summary of an experiment with 50 high school students indicating value of the game. (JN)

Reviews a preschool science curriculum resource guide "Experiences in Science for Young Children," focusing on science content and instructional strategies appropriate for ages three to five. The text includes three sections: science teaching theory, child development, and meaning of science; 53 science activities; and materials and subject matter…

Describes a self-paced undergraduate environmental science course focusing on a theme that earth is similar to a spaceship inasmuch as: (1) both possess finite room and resources, and (2) living things are dependent upon life-support systems for continued survival. Includes a list of laboratory and learning activities. (DS)

Describes a method to allow direct observation of a chick embryo development from three days to about 17 days of incubation, by culturing the entire embryo in a petri dish. (DS)

Describes ways platyfish can be utilized in biology activities and experiments. Includes an account of the animals' care, unique anatomical characteristics, reproductive behavior, and genetics. (DS)

Provides examples of several classroom activities utilizing the American horseshoe crab (Limulus Polyphemus), including raising fertilized eggs, fertilizing eggs in vitro, and testing water samples. Includes background information on the natural history, life cycle, and breeding habits of this animal. (DS)

Describes equipment, experiments, and activities useful in middle school science instruction, including demonstrating how strong paper can be, the inclined plane illusion, a simplified diet calculation, a magnetic levitator, science with soap bubbles, a model motor and dynamo, and a pocketed sorter for safety glasses. (SK)

Four means of altering fat levels in laboratory mice, contrasting invasive injection techniques with non-invasive dietary and behavioral means, are described. Relates these investigations concerning obesity to the practicality of using animal models as an approach in searching for physiological knowledge about human beings. (CS)

Supports the importance of selecting science activities for middle school students that are appropriate to their age level. Lists a variety of resources for science activities, including 11 unit guides, three source books, four journals, and professional meetings. (CS)

Discusses simplified experiments in which sinusoidal signals are detected when a laser beam is sent into a photodiode. (HM)

Discusses an addition to an apparatus which allows the effect of temperature on a paramagnetic compound to be measured, therefore demonstrating the Curie-Weiss law. The experiment can be used as a demonstration or student experiment to stimulate discussion of magnetic susceptibility and ligand field trips. (Author/JN)