Describes an activity to simulate enzyme activity. Discusses the processes demonstrated and variations in the assembly line method. (CW)

Describes a process for producing terminal or internal alkynes from ketones. Recommends using the experiment to aid in understanding acid-base strength, enolate anion chemistry, reaction at carbon versus oxygen, use of polar aprotic solvents, and elimination and nucleophilic substitution reactions. (ML)

Describes the use of student journals in a liberal arts chemistry class taken as part of the general education requirements by nonscience majors. Discusses the structure, grading, process, and benefits of the journal and its use in the course. (CW)

Describes three experiments: (1) "Liquid Flow from Orifices"; (2) "Microcomputer-Controlled Investigation of Battery Discharge and Recovery"; and (3) "Measurement of the Speed of Sound." Drawings and diagrams accompany each. (RT)

Points out that many of the demonstrations explained as examples of inertia are in reality more related to some other effect, and that mass plays a very small role in the result. Describes what really happens in the demonstration. (YP)

Describes three activities, substrate inhibition, product inhibition by fructose and glucose, and gel immobilization of invertase for use with undergraduate biochemistry classes. Discusses materials, methods, and results. Stresses the advantages of practical exercises in undergraduate classes. (CW)

Gives some ideas for studying and growing crystals in the classroom and home as well as some background information to help integrate these ideas into an existing science curriculum. Discusses three activities including common household materials and laboratory procedures. (CW)

Describes two demonstrations for college level chemistry courses including: "Electrochemical Cells Using Sodium Silicate" and "A Simple, Vivid Demonstration of Selective Precipitation." Lists materials, preparation, procedures, and precautions. (CW)

Describes an experiment which illustrates the kinetic versus thermodynamic control of chemical reactions for organic chemistry students. Considers the laboratory procedures including the isolation of both the kinetic and thermodynamic products. (CW)

Discusses a typical food chain and the interrelationship between plants and animals. Describes the "Food Chain Pit" game which can be used to help students create food chains of different habitats. (RT)

Descriptions of eight exemplary precollege earth science programs are presented. The programs were locally developed, nontext based, and having an extensive laboratory component. The programs emphasize societal issues involving aspects of earth sciences. (CW)

Notes several benefits that early childhood activities with plants can provide. Contains suggestions on projects involving children and narcissus bulbs, birdseed gardens, and amaryllis. Includes several extentions to the activities which deal with art and dramatics. (TW)

Investigates the effects of using scientific apparatus versus household objects on the accuracy of primary school children in a simple titration exercise. Indicates no significant difference between the accuracy obtained using the two types of apparatus at the beginning, but improved performance for children using scientific apparatus by the end.…

Describes a hands-on lesson in magnetism designed to be used with upper elementary grade students. Emphasizes structured experiences which involve the student in measuring, data collecting, graphing, and extrapolating information. (TW)

Describes an after-school science program, "Hands On Science," in which children from kindergarten though sixth grade discover that the application of science and technology begins with simple materials, a need, and their minds. (Author/BB)