Marine hermit crabs are a simple and exciting way to introduce landlocked students to the ocean. Tips for keeping the crabs in the classroom, crab anatomy/behavior, and student activities (including a challenge to students to race their crabs) are discussed. (Author/JN)

Described is a method of simulating the formation of a DNA distribution, on which statistical results and experimentally measured parameters from DNA distribution and percent-labeled mitosis studies are combined. An EAI-680 and DECSystem-10 Hybrid Computer configuration are used. (Author/CS)

Describes the nature of wetlands (low areas with shallow water or water-soaked soils supporting aquatic and semi-aquatic plants) and suggests wetlands topics and activities for science, history, and language classes. (Author/SK)

Instructions are provided for assembly of a pull-out, two-sided picture puzzle of the skeleton of a seven-year-old girl. Suggestions for activities using the assembled puzzle and comments on bones and bone morphology are also provided. (Author/JN)

Outlined is a water ecology unit included within a one-semester field biology course for upper level high school students. Activities described include a visit to a water treatment plant, an abiotic stream study, a biotic stream study, interactions and questioning topics, and individual projects. (CS)

Provides abstracts of contributed and invited papers presented at the 32nd Annual Fall Meeting of the American Physiological Society, held in Cincinnati, Ohio, October 11-16, 1981. (CS)

Presents arguments against the recent "punctuated equilibrium" point of view expressed by evolutionists Stephen Jay Gould and Niles Eldredge. Reviews evidence for continuous and gradual change, as recently cited by four anthropologists in the July 9 issue of "Nature." (CS)

Described is a school project to investigate aggregations in flatworms which may be influenced by light intensity, temperature, and some form of chemical stimulus released by already aggregating flatworms. Such investigations could be adopted to suit many educational levels of science laboratory activities. (DS)

Two implanted slide techniques are described by which activity of proteolylic bacteria and the growth of algae in the soil can be readily studied by school students using simple apparatus and methods. Variations are suggested for studying the effects of agricultural practices and environmental conditions on the soil bacteria and algae. (Author/DS)

Describes how a cooperative learning environment can be created in the anatomy and physiology laboratory through the use of cooperative quizzes. Includes a brief introduction to the pedagogical theory behind cooperative learning and an evaluation of the effectiveness of quizzes compared with more traditional methods. (Author/PVD)

Described is an experiment which investigates the reciprocal changes in both rats and their handlers during handling. Included are questionnaires, procedures and a description of materials. Probable results are discussed. (CW)

Reports on the human immunodeficiency virus which causes disease that culminates in the Acquired Immunodeficiency Syndrome (AIDS). States that the key to prolonging life and health is early detection of the infection which usually occurs years before symptoms emerge. (RT)

Describes children's conceptions of the structure and function of the human digestive system based on an investigation carried out with children aged 4-10 (n=45). Finds that children possess biological knowledge as an independent knowledge domain from the age of four. Discusses acquisition of and barriers to scientific concepts related to human…

Unlike most other fields, business school Ph.D. production has declined in the last decade. Data from the National Science Foundation (NSF) reveal that business and management doctorate production decreased by 6.9 percent between the first and second half of the 1990s. Over the same period, humanities (18.9 percent increase) and life sciences…

This article describes a series of assignments that models the process of writing a manuscript for publication. While completing the assignments, students worked to improve their writing as they graphed, interpreted, and explained patterns in data from a local river. They reviewed published articles and each other's papers to become more critical…