Some common themes of cartoons that use science as a subject are identified. Cartoons that deal with the topics of theory, the universe, school, the relationship between science and technology, and the nature of science are included. The sociology of scientific humor is discussed. (KR)

Two properties of a wing, namely aspect ratio and wing loading, are described and the matrix approach is used to make certain deductions about particular wing plans. Some examples are provided which show how the matrix transformation of one wing plan into another brings about predictable changes in wing properties. (KR)

An experiment that uses the recombinant plasmid pX1108 to illustrate restriction mapping is described. The experiment involves three restriction enzymes and employs single and double restriction enzyme digestions. A list of needed materials, procedures, safety precautions, results, and discussion are included. (KR)

Definitions for the terms open-ended, problem solving, and investigations are considered. The interaction between these terms and teaching styles are discussed. Student influences over the learning process in this type of investigation are examined. (CW)

Studies magnetic oscillation using an air track. Ceramic magnets are attached to the cart and also are used as dampeners in place of the springs. The resulting oscillations are fairly sinusoidal and is a good example of simple harmonic motion. (MVL)

Explains that trial and error learning is an important way for children and adults to learn. Open-ended activities have great opportunities for error and eventual feedback for error reduction. (PR)

Provides easy to teach and understand laboratory exercises for three fundamental concepts (plate movement, rock mechanics, and geologic time) that are often left out of the geology and Earth science curriculum. (ZWH)

Describes how an elementary school class investigated different soap solutions and then developed their own business to sell their own brand of soap. (PR)

This note describes an inexpensive means for making high resolution analog voltage measurements using the parallel printer port of a standard IBM PC or compatible. (PR)

Describes a project of creating an "Amazing but True!" bulletin board display. Students create miniposters of interesting scientific facts. (PR)

Describes making paper with simple materials. (PR)

Describes making yogurt and extension activities for biology instruction. (PR)

Uses models to illustrate the possible "migration route" of the sugar maple in response to predicted global climate change. Curriculum activities for students are provided that specifically address the sugar maple forests of the Great Lakes regions. (ZWH)

Describes an exercise that enlists students and teachers as local experts to predict the effect warmer temperatures will have on agro- and natural ecosystems with which they are familiar. Students will gain an understanding of the "greenhouse effect" and identify factors that determine which organisms occur naturally together. (PR)

Presents an elaboration of the "Dancing Raisins" activity, that features a discrepant event. Ingredients in the stew include baking soda, water, vinegar, raisins, pasta, popcorn kernels, and food coloring. (PR)