Performed a variance analysis of the relation between the amount of time students spend experiencing hands-on science and science achievement. Reports that students who engaged in hands-on activities frequently scored significantly higher on a standardized test of science achievement than students who did not. (Author/JRH)

Presents an example involving the metabolism of carbohydrates by microorganisms that provides results that contradict the generally speculated outcome, which is not an unusual situation in many scientific investigations. (JRH)

Describes a science activity that involves dropping weighted strings from a second floor window or the top row of gymnasium bleachers. The activity, which takes only a few seconds, helps students understand the physics concepts of speed, acceleration, and terminal velocity. (TJQ)

Presents the "Before Technology and After Technology" lab where students first complete a simple lab and graph the data by hand and then repeat the lab using graphing calculators. Enables students to see how technology can make data collecting, graphing, and analyzing more fun. (JRH)

Presents a case study of an unsafe situation in a science laboratory and its administrative consequences. Discusses issues related to laboratory safety and faculty evaluation. (JRH)

Describes hardware that enables the use of an IBM PC microcomputer as a frequency meter or a counter by using the parallel printer port. Eliminates the 16-bit time-day counter through the use of an external time base that can be conveniently set depending on the desired frequency range. (JRH)

Provides instructions for the construction and launch of a two-liter plastic soda-bottle rocket and presents the author's theory of their motion during launch. Modeled predictions are compared with actual experimental data. Explains theory behind the motion of a water rocket during launch. (LZ)

Discusses a dimension of hermeneutics in science that has to do with the production of the experimental object, or with act rather than text hermeneutics. Examines the hermeneutics of experimentation and differing perspectives of technique. (LZ)

Introduces a range of simple ideas about soil physical properties using a minimum of apparatus. (MKR)

In Putnam County, Ohio, an integrated curriculum applies science and math through enhancements to hands-on laboratory components and linkages with local manufacturers. The high school students learn to apply theories to real-world situations, develop teamwork skills and computer literacy, and learn about local employers. (SK)

Provides the background theory and some experiments for studying static equilibrium using a Slinky. (MVL)

Equipped with a little more than batteries, food-dye, and sieving media, teachers can demonstrate an essential process used in biochemical research. An activity is provided to aid in helping students to understand electrophoresis. (ZWH)

Reports on the successful classroom use of commercial fertilizers as growth media. (ZWH)