A device designed for sampling algae in rivers and streams is described. Techniques for observing algae in the laboratory as well as tips for maximizing success in sampling are given. (SA)

Originally designed to create small farms for individual Navajos, the irrigation project has grown into a single 110,000-acre corporate agribusiness, the land's management has fallen out of the grasp of individual Navajos, and the idea of subsistence farming has been plowed under for the planting of major money-making crops. (NQ)

Presents two elementary and two secondary teaching strategies related to food and energy as global issues. Includes making a survey on energy use, an exercise about food, society, and technology, an energy and a water survey, and discussion and experiments concerning food and technology. (CK)

The status of two of life's necessities, air and water, is of crucial importance to the future of American parks and recreation programs, and continued cooperation among federal, state, local and private sectors is necessary to preserve them. (JD)

Describes construction of a model ecosystem using a 10-gallon aquarium with a sand, water and air interface. Pesticides are placed on sorghum plants grown on the terrestrial portion. After 30 days, movement of the pesticide is traced using radioisotope techniques, from terrestrial to aquatic organisms. Details for calculating concentration factors…

Around Puget Sound, communities and elementary teachers value naturalist intelligence, the kind needed to solve environmental problems. As part of an integrated curriculum on water quality, sixth graders are learning about scientific procedures by performing dissolved oxygen, pH, and turbidity tests and taking samples of aquatic organisms. An…

Presents activities that allow students to think about the Earth in a contextual manner and become familiar with constructive and destructive processes as they relate to sand - its origins, cyclical processes, and yielding of new products. Explores the bigger idea with a developmentally appropriate study of water, rocks, sand, physical phenomena,…

Discusses the use of waterways as subjects in works of art. States that teachers can take their students to a river or canal to help them depict waterways. Explains that the four artworks reproduced in the article offer examples for students. Includes artwork by Franklin McMahon, Canaletto, Nancy Lagana, and Vincent van Gogh. (CMK)

Explains the Digital Water Education Library (DWEL) project, a collection being built by and for practicing educators for K-12 education. Discusses the need for high quality digital resources and what is needed to use them effectively, including easy access, grade level differentiation, and integrating resources into the curricula. (LRW)

The ecological issues of pollution, overpopulation, and conservation can be explained in the classroom through the use of creative play, problem solving, and discovery methods among groups of young children. Activities for teaching the topics of air, water, land, and noise pollution; overpopulation; and conservation are suggested. (DG)

This learning activity provides an overview of the problem of clean energy sources and examination of alternatives. Student activity, quiz with answers, related activities, and nine references are provided. (SK)

Lists titles of 31 environmental programs over 13 broad categories including terrestrial ecosystems, oceans, health and welfare, and energy, industry and transportation. Describes the general objectives, implementing agencies, and the role of UNEP (United Nations Environment Programme). (YP)

Discusses the development of a global program designed to provide a worldwide study of the earth, oceans, and atmosphere as a system; and to document changes that are occurring in this system. Explains the objectives and three core projects around which the experimental program has been organized. (RT)

Describes a demonstration to show the character and behavior of mixing clouds. Discusses laminar and turbulent flow, and the formation of contrails and other cloud phenomena. (CW)

Discusses a program in which students complete surveys identifying home energy and water use and its impact on the environment. Survey results are entered into computers lent to the school by a sponsoring utility company. Includes sample activities. (MKR)