Describes some experiments of parametric effects intended to be disigned by the students themselves and shows how to introduce parametric interactions and nonlinearities to the students in a simple manner. (GA)

A qualitative demonstration of wave motion along a linear spring is being used, quantitavely, to present three methods of measuring the phase velocity of the waves. (GA)

Describes a demonstration that shows induction, emf, and the right-hand rules, using two solenoids, two strong bar magnets, and two small masses. (GA)

An aerospace education activity is described which is suitable for grades 3-12. Students piece together several images from the Landsat satellite to make a mosaic of their state. From the mosaic clear acetate overlay maps can be made relating to such subjects as agriculture, geology, hydrology, or urban planning. (BB)

Describes an apparatus which allows one to study the speed distribution, the gravitational distribution, and the mean free path of steel balls agitated into two-dimensional motion through collisions with the moving walls of their enclosure. (Author/GA)

Analyzes projectile motion using symmetry and simple geometry. Deduces the direction of velocity at any point, range, time of flight, maximum height, safety parabola, and maximum range for a projectile launched upon a plane inclined at any angle with respect to the horizontal. (Author/GA)

Describes a paper chromatography experiment designed for fifth and sixth grade students. Utilizes common materials that need no special ordering. Background information, conclusion questions, and sample chart are included. (MA)

This experiment is suitable for illustrating synthesis-analysis and isopolyanion chemistry at the freshman level or at a more advanced level. (BB)

In this general chemistry experiment students calculate changes in free energy of formation of inorganic salts from the free energy of formation of ions. Then they test the conclusions of their calculations by mixing solutions of the ions. (BB)

Describes a laboratory demonstration that can be used to convert an analog quantity into frequency, which can then be converted into a binary measure using either an oscilloscope or a frequency counter. (MA)

This is a college-level general chemistry experiment. (BB)

Outlines a contract for an eighth grade unit on the human digestive system and nutrition. Lists required and optional activities. (CS)

Describes an eighth grade rock exchange project in which small groups of students researched, then wrote letters to schools throughout the United States requesting samples of local rocks and minerals. Provides experience in use of the atlas and letter writing. (CS)

Suggests and describes several learning activities that complement a high synergy classroom, i. e., "one which thrives on cooperative use of power." Described are: (1) the stages in using synectics with examples; (2) the techniques of webbing and guiding; (3) development of new games; (4) development of student portfolios; and (5) classroom…

Included are instructions and diagrams for building weather instruments (wind vane, Celsius temperature scale, and anemometer) from simple tools and Tri-Wall, a triple-thick corrugated cardboard. Ordering sources for Tri-Wall are listed. Additional weather instruments that can be constructed are suggested. (CS)