Presents nine selected chemistry notes which could be used in school chemistry courses. Each includes the name of the author, a description of activities suggested and a list of references. (HM)

Seven suggested activities for use in biology classrooms are described. (HM)

Presents thirteen selected chemistry activities which could be used in school chemistry courses. (HM)

Presents five selected physics activities which could be used in school physics courses. (HM)

The hazards associated with recombinant DNA research are presented along with some social implications and the development of recombinant DNA research guidelines by the National Institutes of Health. (SA)

Describes few heat demonstrations where the use of a coolant spray could enhance their effectiveness. (GA)

Describes a laboratory experiment for secondary school chemistry students utilizing the classic reaction between the iron(III) ion and the thiocyanate ion. The experiment also works very well in other chemistry courses as an experience in spectrophotometric analysis. (PVD)

Describes an approach to a demonstration of the Golden Penny Experiment for high school students in which the teacher assumes the disguise of an alchemist and invites the students to devise ways of determining whether the penny has really turned to gold. (DDR)

Describes the recent history, chemistry, and educational uses of the Orange Juice Clock demonstration in which a galvanic cell is made from the combination of a magnesium strip, a copper strip, and juice in a beaker. Discusses the chemistry basics, extensions for more advanced students, questions for student/teacher workshop participants, and…

In this demonstration of the generation and combustion of acetylene, calcium carbide and water are allowed to react in a latex examination glove. Two student volunteers perform the demonstration with instructor guidance. This safe, popular demonstration, originally intended to illustrate the alkyne family of compounds, can be used with a variety…

Describes a simple computer-interfaced experiment for recording the response of an RC network to direct current and square input signals. Undertakes a systematic qualitative and quantitative analysis for the high- and low-pass configurations. Suggests some examples of open-ended problems to develop a feel for circuit behavior. (AIM)

Describes an experiment relating to fossil populations and using snails. Presented are the procedures and questions for the experiment. Provides four topics for additional study. (YP)

This article discusses two data analysis methods: (1) Box plot; and (2) Outlier. Described are the procedures for drawing the two diagrams, wing median, quartiles, and highest and lowest values. (YP)

Described are the techniques and results of using this tissue culture activity. Discusses the advantages of using such techniques in teaching alternation of generation life cycles to biology students. (CW)

Describes a demonstration to show the character and behavior of mixing clouds. Discusses laminar and turbulent flow, and the formation of contrails and other cloud phenomena. (CW)