Israel's Sciempiad is an annual nationwide science competition for students ages 14 to 15, designed to stimulate interest in science and identify students with potential to become leading researchers. This article discusses how the selection procedure was determined and outlines steps in the selection process. (JDD)

Argues that scaling laws (square-cube law) used to predict the physical consequences of increasing and decreasing an object's size should be made a part of the high school science curriculum. (ZWH)

Describes three census activities concerning birds and butterflies that involve students in the actual collection of biological data. A Project Feederwatch data form is also included. (ZWH)

Describes how literature can be used in the science classroom. Discusses Activities; Promoting Excellence in the Classroom; Equity for all Students; and Adapting the Method. (ZWH)

Describes how a film regarding a controversial issue (evolution education) can be used in the classroom to generate student interest and initiate excellent opportunities for teaching critical thinking skills in high school biology. Daily activities are provided to demonstrate how a lesson on evolution was built around this film. (ZWH)

Describes a project designed to allow middle school students to learn some science concepts through application of science and mathematics lessons. (ZWH)

Discusses how you can use a sonar-based fish finder to engage students in an activity that allows them to make their own topographic map of a surface that they cannot see. (ZWH)

A simple technique is described by which the cells attached to plucked hair can be observed and used to demonstrate dividing and differentiating cell populations. The necessary equipment and the procedure are listed. (Author/KR)

An activity that incorporates the concepts of plant structure and function and ecology is described. Students investigate the reasons why some California chaparral seeds germinate only after a fire has burned the surrounding chaparral. The procedure, discussion and analysis questions, expected results, potential problems, and additional activities…

A procedure for estimating the speed and distance of plane, assuming the speed of sound and the velocity of the plane are constant, is described. (KR)

A procedure for measuring the speed of light using the assumption that the frequency of light remains unchanged as it moves from one medium to another is presented. A laser with a known wavelength and frequency in air was used as a light source. (KR)

A quantitative and inexpensive way to measure the rate of enzymatic reaction is provided. The effects of different pH levels on the reaction rate of an enzyme from yeast are investigated and the results graphed. Background information, a list of needed materials, directions for preparing solutions, procedure, and results and discussion are…

Two easy student activities that demonstrate physical weathering by expansion are described. The first demonstrates ice wedging and the second root wedging. A list of the needed materials, procedure, and observations are included. (KR)

The advantages of using invertebrates in teaching physiological principles are discussed. The ability to illustrate with greater clarity physiological principles, the range and variety of physiological processes available for examination, and the unlimited possibilities for student research are topics of discussion. (KR)

A card exchange activity that can be used to draw students into consideration of the philosophy of science is described. Over 30 statements representing the categories of theoretical emphasis, empirical emphasis, antiscience view, scientism, and balanced view are included. (KR)