Describes student activities with mercuric oxide and mercury that help them to form models of the solar system and its creation. (JR)

Discusses three experiments, respectively, relating to electricity, optics, and electronics, which provide both the experienced and weaker students with a high interest in determining unknowns from a limited amount of information. (CC)

Discusses phenomena relating to the nature of soap films and describes soap film experiments suitable for secondary school science students. (JR)

Discusses an experiment which introduces students to the effects of electrical forces on the motion of macroscopic objects. Included are the proecedures of measuring the charge-to-mass ratio from deflections of charged water drops in horizontal fields and the overall charges delivered in a Faraday cup. (CC)

Discusses ways in which children can learn by measuring a variety of common objects. (JR)

Describes an activity using simple materials that gives students an opportunity to express their ideas about possible extraterrestrial life forms. (JR)

Describes a science activity in which sixth-grade students, using tookpicks and spherical breakfast cereals to construct molecular models, discovered that compounds with the same molecular formulas can have different structural formulas and therefore different physical properties (isomerism). (JR)

Describes how student understanding and interest in the metric system system can be stimulated by building and launching model rockets. (JR)