Shows that the mutual repulsion that enables a superconductor to levitate a magnet and a magnet to levitate a superconductor can be combined into a single demonstration. Uses an overhead projector, two pellets of "1-2-3" superconductor, Nd-Fe-B magnets, liquid nitrogen, and paraffin. Offers superconductor preparation, hazards, and disposal…

Describes a photochemistry experiment designed to introduce photochemical techniques and experience free radical chemistry. Selects Nuclear Magnetic Resonance spectroscopy for the analysis. This activity is suggested for use in an upper level undergraduate organic course. (MVL)

Presents a high school chemistry lab experiment using tin (II) chloride to explore the concepts of hydrolysis, Le Chatelier's principle, and electrolysis. Presents methodology and the chemistry involved. Offers questions for the students. (MVL)

Describes some reactions for the identification and application of cyanuric acid. Suggests students may find this applied chemistry interesting because of the use of cyanuric acid in swimming pools and diesel engines. Lists three tests for cyanate ion and two tests for cyanuric acid. (MVL)

Describes a simple demonstration of the flow of sand through an orifice at the bottom of a sandbox. Advocates the experiment's use with dimensional analysis for students in an introductory physics course. (WRM)

Describes some experiments that can be performed at home to illustrate what makes popcorn "pop". (WRM)

Discusses BioProjects, a new technique for helping students understand the scientific method, in which students formulate a hypothesis, test it, and present the project to the class. States that through biological, quantitative investigations conducted outside of the classroom, BioProjects helps students develop investigative as well as oral and…

Tests a multifaceted curriculum for use in introductory earth science classes from the secondary school to the introductory undergraduate level. Simulates the greenhouse effect with two fish tanks, heat lamps, and thermometers. Uses a hands-on science approach to develop a deeper understanding of the climate system among students. (Contains 28…

This article describes a variety of opportunities for educational activities that can be found in the complex, yet easy-to-manipulate, trophic relationships between goldenrod plants, insects that induce gall formation, and the natural enemies of these gallmakers. Gall collection, measurement, and observation (exit holes, larval response,…

Case-based laboratories offer students the chance to approximate real science. Based on interesting stories that pose problems requiring experimental solutions, they avoid the cookbook approach characteristic of traditional undergraduate laboratory instruction. Instead, case-based laboratories challenge students to develop, as much as possible,…

A single heartbeat is a complicated process. In Dutch upper secondary biology textbooks this process is illustrated by the classical Wiggers diagram, which usually shows different heart-related quantities, like voltage (ECG), blood pressure, and the heart sounds. It may help students to understand the nature of the Wiggers diagram if they perform…

In January 2006, every science department chair in U.S. public, private, and parochial high schools received information on food science, including a DVD, poster, and experiment guide developed by the Institute of Food Technologists (IFT), IFT Foundation, and Discovery Education. To promote the experiments and to encourage implementation of the…

In the 20 years since the inauguraion of "Jugend forscht" (Young Researchers) over 26,000 boys and girls have taken part in this annual Olympiad of young innovators. This brochure gives an insight into the diversity of themes dealt with by the "Jufos" (young researchers) and into their ability to achieve astonishing…

Introductory science has become a discovery course for the students at Phillips Exeter Academy (New Hampshire), who are above average in ability and motivation. The philosophy of the course is that it should serve a more humanizing function than the preparation of young technicians, and that this function is as important for the future scientist…

Reported is a study to investigate the effects of a free-choice program on children's ability to interpret experiments, design simple investigations, and recognize variables that could affect the outcome of observed events. (Author/SA)