Describes two games which may be used with pairs or teams of students in earth/space science courses to reinforce and enrich content and to review subject matter. A microcomputer program in BASIC II is provided. (CS)

Discusses the nature of light-producing reactions and provides a procedure for demonstrating chemical luminescence using siloxene indicator. Indicates source of this chemical and safety precautions. (SK)

Provides instructions and rules for a game to teach covalent bonding in which a set of plastic atoms are combined to produce stable covalent bonds. (DS)

Discusses the beach and nearshore environment, including dune formation and ecology. Includes a lesson plan for dune and beach activities. (MA)

Discusses the use of toys to teach physics. Potential advantages and disadvantages of using toys in the physics classroom or laboratory in addition to some demonstrations and experiments that use balls, cars, and musical toys are also presented. (HM)

Presents six selected middle school science notes which could be used in school science courses. Each includes the name of the author and a description of activities presented. (HM)

Describes the use of solar cookers in the science classroom. Includes instructions for construction of a solar cooker, an explanation of how solar cookers work, and a number of suggested activities. (DS)

Hypothesizes that superior performance by males in science could be related to their greater ability to perform well on tests of spacial visualization and mechanical aptitude. Suggests activities to improve science achievement with females. (Author/DS)

Describes an undergraduate experiment which measures the energy gap in silicon and germanium. Theory, procedure, and results of this experiment are included. (HM)

Presents a dice-playing game which mathematically unsophisticated students and school children can play to learn empirically the principles of radioactive dating and population growth. (HM)

Describes and evaluates the fabrication of an easily constructed and inexpensive stop-flow system using commercially available components. (CS)

Described is an advanced biology class project involving study of the effects of organic pollution on an aquatic ecosystem from an sewage treatment plant overflow to evaluate the chemical quality and biological activity of the river water. (DS)

Describes how teachers can use wheels of tricycles, bicycles, and trains to stimulate children with mathematics, relative position, and engineering concepts. Techniques are offered for measuring circumference of a bicycle wheel, gear ratios, and pedal wheel circumferences. Comparative data are given for various sized wheels. (Author/SA)

Described is a procedure for the study of condensation polymerisation. The objectives of this study are to help students understand concepts that are somewhat abstract in nature (i.e., polymerisation) through derivation of equations that help to describe and predict the particular phenomena. (CS)

Described is an inexpensive and safe laboratory experiment that accurately duplicates the shapes and structures of simple impact craters using fireplace ash, finely ground charcoal, and an air gun. (Author/DS)