Presents an activity for students to construct their own two-cup balances. Suggests some alternatives for rejuvenating weak bar magnets. Describes how to remove burnt carbon deposits from glass vessels. (NB)

Introduces self-assembling, three-dimensional models (SAMs) that present the structure and behavior of water which facilitates a better understanding of the structural geometry of water. (Contains 12 references.) (YDS)

This article examines the role that field testing plays in environmental measurements now and for the future. Such issues as when field testing should be conducted, the reliability of field tests, regulatory acceptance, cost efficiency, and the use of mobile laboratories are reviewed. (LZ)

Describes a method to examine preparations of rocks in thin sections between crossed polaroids using a converted biological microscope or a homemade polariscope. (JRH)

Describes the construction and use of homemade kaleidoscopes using film canisters and microscope slides. (JRH)

Describes the working of the Adiabatic Gas Law Apparatus, a useful tool for measuring the pressure, temperature, and volume of a variety of gases undergoing compressions and expansions. Describes the adaptation of this apparatus to perform isothermal measurements and discusses the theory behind the adiabatic and isothermal processes. (JRH)

Describes how teachers and students can construct a mass, spring scale, lever, and pulley. (ZWH)

Describes a simple and inexpensive procedure for constructing a circuit element that will allow for continuously variable and precisely controllable low direct-current voltages. (WRM)

Describes the construction of a Tesla coil using a car coil and presents various experiments for which it can be used. (JRH)

Demonstrates that good values of the ratio of the principal specific heats of a gas can be obtained with a relatively simple apparatus. Describes the basic processes involved and the apparatus. (AIM)

Presents the idea that cloud chambers can be used by students as an experimental tool enabling them to conduct their own investigations on radiation. Provides detail regarding the construction of a cloud chamber and suggestions for student assignments that involve the cloud chamber. (DDR)

Recently there have been newly launched ocean color satellites which target the coastlines at unprecedented scales. Science education curricula can benefit from the provision of small low-cost spectroradiometers and curriculum supplemental materials that can be incorporated in a "hands on" teaching approach to explain and demonstrate remote…

This article describes preparation and delivery of high school mathematics lessons that integrate mathematics and astronomy through The Geometer's Sketchpad models, traditional proof, and inquiry-based activities. The lessons were created by a University of Texas UTeach preservice teacher as part of a project-based field experience in which high…

An important aspect of developing science literacy for all students is developing science-literate teachers. With the implementation of the No Child Left Behind Act, many middle school teachers found themselves in a position where they were no longer qualified to teach middle school science. This study was designed to help science teachers…

A microcosm is a small, completely sealed, self-sustaining ecosystem. Once a microcosm has been sealed in a transparent container, only light and some heat can enter and only excess heat can leave. This manual describes how to set up aquatic microcosms using glass jars and little or no collecting equipment. The activities can be tailored to suit…