Discusses and suggests some solutions for three problems related to chemistry laboratory management, including disappearance of teaching assistants, check in/out procedures, and slow students. (YP)

The data from measurements of the density of tungsten, steel, aluminum, and PVC spheres are used to extrapolate the infinite density of something such as a neutron star. An apparatus that allows for precision measurements is described. A discussion on error analysis is appended. (KR)

Uses a Vygotskian framework to examine students' (n=26) use of tools in a ninth-grade physical science classroom during a unit on electric circuits. Indicates that conceptual progress may be hindered by students' need to first understand the tools in terms of everyday application. Advocates selection of laboratory tools and activities that match…

Examines the history of the white lab coat in scientific and medical practice and discusses the recognition of it as a cultural symbol. Contains 11 references. (WRM)

Describes the construction of a conductivity meter that includes a timer and a readout display that provides semiquantitative information. The meter can be made into a hand-held or lecture hall (demonstration) version. (WRM)

Presents guidelines for equipping physics labs with components from each of four technology-use categories: (1) computer interfacing; (2) modeling; (3) simulations; and (4) research-reference-presentation. Includes references to useful websites discussing educational technology. (WRM)

"Match Game" is a simple game designed through which students could learn the names of all lab equipment and glassware that they would encounter during the school year. The game leads into a student-based discussion during which they carefully think about proper uses for each piece of labware.

An introductory undergraduate physical organic chemistry exercise that introduces the harmonic oscillator's use in vibrational spectroscopy is developed. The analysis and modeling exercise begins with the students calculating the stretching modes of common organic molecules with the help of the quantum mechanical harmonic oscillator (QMHO) model.

The advent of cheaper SLR digital cameras and associated software has allowed the rapid creation of digital images. We explain three simple techniques that allow the generation of micrographs. A further technique is described that allows the production of an image from a full section of the microscope slide. Class sets of micrographs greatly…

"Nuggets" are suggestions with practical advice to help in communicating biology to students. They are shorter than the formal papers and have not been peer-reviewed, but may provide ideas for the classroom. This article presents inexpensive alternative methods for students to measure small volumes of liquids in school biology laboratories.

Articles about the pendulum in four journals devoted to the teaching of physics and one general science teaching journal (along with other miscellaneous articles from other journals) are listed in three broad categories--types of pendulums, the contexts in which these pendulums are used in physics teaching at secondary or tertiary levels and a…

Computers are routinely used to control experiments in modern science laboratories. This should be reflected in laboratories in an educational setting. There is a mismatch between the power that can be delivered by a computer interfacing card or a TTL logic circuit and that required by many practical pieces of laboratory equipment. One common way…

Studies of protein function increasingly use multifaceted approaches that span disciplines including recombinant DNA technology, cell biology, and analytical biochemistry. These studies rely on sophisticated equipment and methodologies including confocal fluorescence microscopy, mass spectrometry, and X-ray crystallography that are beyond the…

Describes a procedure for teaching undergraduate instrumental analysis laboratories to help minimize student confusion about the instruments. Handouts are distributed prior to the experiments and a thorough discussion of the instruments is given at the beginning of the experiment, followed by a demonstration of the instrument by the instructor.…