Describes a simple halogenation experiment that can be performed quickly in an open vessel at room temperature with visible light that is appropriate for the beginning weeks of an introductory organic chemistry course. (WRM)

Provides a protocol for examining the mechanisms of animal thermoregulation in a straightforward but more sophisticated manner than using a thermal gradient. Describes a methodology for conducting operant conditioning to examine thermal set points for ectothermic animals. Contains 20 references. (WRM)

For a two-year period, 32 secondary students gifted in the areas of mathematics and science participated in a curriculum which incorporated higher-level thinking skills and more real-life laboratory experiences into mutually reinforcing mathematics and science lessons. After the program, participants scored higher on mathematics and science…

Describes a freshman biology laboratory project that uses the polymerase chain reaction to introduce students to the interrelationship between biology and chemistry. Students must develop their own experimental protocol, perform calculations introduced in freshman classes, and evaluate group dynamics. (Author/WRM)

The Inuit subsist on a diet of virtually all meat and fat yet avoid deficiency and heart diseases. Explains this paradox and discusses cultural and geographic influences on diet. The Inuit diet is compared with a typical American diet and the diet recommended by the U.S. Department of Agriculture in a laboratory exercise that measures dietary fat.…

Outlines the aims and principles underlying recent reforms in the junior school physics course in China. Focuses on developing students' abilities and the benefits of experimentation rather than the simple transfer of knowledge from teacher to students. (DDR)

Compares the academic performance of students exposed to either "wet" practical classes or "simulated" practicals. Assessed practical write-ups from pharmacology students using a simulation showed a mark significantly better than those doing the "wet" practical. Simulations can provide an aid to learning which is as effective as "wet" practicals,…

Discusses the structure of a laboratory course that employs guided inquiry and collaborative learning to increase student preparedness for and intellectual engagement in laboratory investigations, and to give students an understanding and appreciation of a collaborative work environment. Contains 29 references. (DDR)

Describes different research activities that can be used in a college dining facility to make it a real-life laboratory where students can apply research skills and learn about the scientific method. Offers evidence that the experience provides an effective tool to teach the scientific method. (CMK)

Describes a science activity on polyploidy targeting middle and high school students which can be used to discuss topics such as chromosomes, cells, plant growth, and functions of stomates. Integrates mathematics in data collection. (Contains 13 references.) (YDS)

Describes a simple, inexpensive modification that changes a brightfield microscope into a darkfield microscope, allowing low-contrast samples to be examined. (WRM)

Describes the construction and use of an inexpensive, portable photometer designed specifically for estimating population sizes in yeast cultures. Suggests activities for use with the photometer. (WRM)

The intent of this study was to investigate the impact of introducing computerized means, mainly simulation and the Internet, on teaching and learning electronics in Israeli high schools. Computers in electronics studies are, at the same time, part of the subject matter learned and a means for teaching and learning. Data were collected through…

In this article, the authors present a classroom experiment that was developed to introduce middle school learners to the carbon cycle. The experiment deals with transfer of CO[subscript 2] between liquid reservoirs and the effect CO[subscript 2] has on algae growth. It allows students to observe the influence of the carbon cycle on algae growth,…

An infrared (IR) thermometer lab offers the opportunity to give science students a chance to measure surface temperatures, utilizing off-the-shelf technology. Potential areas of study include astronomy (exoplanets), electromagnetic spectrum, chemistry, evaporation rates, anatomy, crystal formation, and water or liquids. This article presents one…