Reviews growing concern about the quality of tapwater as a source of drinking water. Investigates the preferences of people for tapwater, filtered tapwater, and commercially bottled water, before and after a taste test. Results indicate a preference for bottled water before the taste test and a preference for filtered water after tasting. Contains…

Presents the study of declining Anuran populations as a mystery to be solved by teams of investigators. Student teams research assigned topics and develop scenarios to explain the declining populations. Provides background information on Anurans along with clue sheets. Describes possible extensions for the activity and provides the source for a…

The Seattle School District began a program in 1990 to identify lead levels in the district's drinking water and to implement measures to lower any high lead levels. Recounts each of the seven steps of the program, discusses what the district found, and explains how it lowered lead levels in the drinking water. (MLF)

Explains that there are new compounds to identify and new health threats from known byproducts in the switch from chlorine to alternative disinfectants in drinking water utilities. (Author/MM)

The environmental significance of acid rain on water systems of different buffer capacities is discussed. The most prevalent natural buffer system is created by the equilibrium between carbonate ions and carbon dioxide.

The structure of a hydrogen bond is elucidated within the framework of molecular dynamics based on the model of Rahman and Stillinger (R-S) liquid water treatment. Thus, undergraduates are exposed to the powerful but simple use of classical mechanics to solid objects from a molecular viewpoint.

The availability of abundant water resources in the Upper Midwest of the United States is nullified by their contamination through heavy commercial and industrial activities. Scientists have taken the responsibility of detecting the water quality of these resources through remote-sensing satellites to develop a wide-ranging water purification plan…

Sediment oxygen demand (SOD) is the rate that dissolved oxygen leaves the water column in a body of water due to the build-up and decomposition of organic carbons in the sediment. The introduction of organic materials changes the chemistry of streams, and many chemical reactions occurring in bodies of water, with the exception of photosynthesis,…

Drawing on game-design principles and an underlying situated theoretical perspective, we developed and researched a 3D game-based curriculum designed to teach water quality concepts. We compared undergraduate student dyads assigned randomly to four different instructional design conditions where the content had increasingly level of…

This award-winning, 350-page, full-color book provides a thorough study of Arizona water resources from a water conservation perspective. Its background section contains maps, graphs, diagrams and photos that facilitate the teaching of 15 interactive, multi-disciplinary lessons to K-12 students. In addition, 10 Arizona case studies are highlighted…

The surface water quality studies are developed to help first year college students who are preparing to become high school teachers. These water quality impact studies allow students to correlate geologic conditions and chemistry.

Given the privileged status claimed for active learning in a variety of domains (visuomotor learning, causal induction, problem solving, education, skill learning), the present study examines whether action-based learning is a necessary, or a sufficient, means of acquiring the relevant skills needed to perform a task typically described as…

The importance and significance of the environmental education, as one of today's accentuated assignments, is unquestionable. The reasons for these are approached from different perspectives, both by specialists and by educators/pedagogues, but also by the entire society. In this article --selecting from various possibilities--we shall demonstrate…

The following methods for reaching new extension audiences were used by a small ranch water quality program in Nevada: agency collaboration in identifying audience needs and idiosyncracies; an array of teaching techniques (workshops, individual visits, print materials); audience participation in program development; and maintenance of interest…

Waterborne diseases like cholera, typhoid, and dysentery are not problematic in the United States. Most industrial and agricultural chemicals are neutralized by existing treatment technology, but cryptosporidium contamination can occur in dysfunctional treatment/filtration systems. Bottled water is no better than tap water. Awareness is better…