Describes construction of a model that can demonstrate the activities of the human lungs. Among these are the effects of occluding the trachea and respiratory opening, the action of diaphragmatic and negative-pressure breathing and pressure changes. (SA)

A laboratory exercise using a gerbil is described for use in the high school biology class and in accordance with the National Science Teachers Association guidelines. The authors cite references that deal with current awareness of the moral status concerning animals. The exercise includes measurement and calculations. (SA)

Basic marine aquaria equipment, techniques for maintenance, specimens and food for the marine organisms are discussed. Several sources of specimens are included. (SA)

Procedures for constructing an inexpensive, hands-on working model of DNA are provided, as well as suggestions for using the model in a high school or college biology class. (DC)

Presents five activities that combine art and biology skills: (1) creating a work of art based upon microscopic observations; (2) collecting patterns found in or on or produced by organisms; (3) making bio-sculptures; (4) creating a creature; and (5) visually expressing an organism or biological concept. (DC)

Discusses field collection, preservation and storage techniques, and identification of slime molds (with fruiting bodies). (DC)

Described are the advantages of using crayfish in an elementary or secondary biology class, crayfish activities, field collection, classroom care, and identification. (DC)

Introduces a teaching method called guided design which involves a series of problems and solutions with feedback that leads students in a logical sequence through material being taught. Presents 15 worksheets to demonstrate the use of this technique in an introductory ornithology course. (Author/DC)

Suggesting advantages of using forests to teach succession, briefly outlines procedures for gathering evidence of succession including numbers, ages, and sizes of trees. Five plot studies conducted by students at the University of Victoria are also described. (DC)

Proposes the use of schoolyard activities as a viable alternative to extended field trips for field investigations in biology. Describes and provides examples of different approaches including a problem oriented technique, Outdoor Biology Instructional Strategies (OBIS), and a sourcebook sponsored by the Council for Elementary Science…

Reports on an island ecology course offered by Eastern Connecticut State College providing opportunities for students to study the ecology and natural history of organisms found in a variety of subtropical habitats in Bermuda. Explains student selection criteria, trip preparation, evaluation criteria, daily programs, and habitats studied on the…

Presents a series of tried and tested ideas for making the college and high school biology laboratory a place where students can become active investigators. Focuses on infusing investigative laboratories into existing courses, laboratory equipment, student capabilities, instructor time, and student and instructor attitudes toward laboratory…

Describes a self-paced undergraduate environmental science course focusing on a theme that earth is similar to a spaceship inasmuch as: (1) both possess finite room and resources, and (2) living things are dependent upon life-support systems for continued survival. Includes a list of laboratory and learning activities. (DS)

Describes a method to allow direct observation of a chick embryo development from three days to about 17 days of incubation, by culturing the entire embryo in a petri dish. (DS)

Describes a laboratory exercise which applies Koch's Postulates to a plant disease, bacterial speck. Includes an explanation of Koch's Postulate, list of equipment needed, advance preparation, outline of the three-week activity, and variations of the laboratory exercise. (DS)