Four types of values education approaches for use in teaching in high school biology classes are described. The approaches include moral development, values clarification, action learning, and analysis. Inculcation is mentioned but not discussed because the author feels that it does little to help develop values. (SA)

The author offers laboratory procedures for experiments using the bacterium, Agrobacterium tumefaciens, which causes crown gall disease in a large number of plants. Three different approaches to growing a culture are given. (SA)

Describes an inexpensive, easy-to-construct manometric device that is a substitute for an expensive commercial transducer that is sensitive to slight pressure fluctuations. An activity for demonstrating the importance of CO-2 as a humoral regulator of respiration is described. (Author/SA)

A technique is presented which utilizes wax moth larvae in a laboratory investigation of an insect virus. Describes how an insect virus can be used to introduce undergraduate biology students to laboratory work on viruses and several virological concepts. (SA)

Presents a discussion of the need to present a realistic view of the process of science to students in the laboratory. Several activities and readings are suggested. (SA)

Describes a rapid staining technique for investigating the anatomical expression of two recessive genes. The demonstration is intended to stimulate students who are interested in the practical applications of genetics. (Author/SA)

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)

Described is a student exercise demonstrating plant biorhythms in Albizzia julibrissin. Initial preparation and methods for conducting the exercise are explained, and sample data graphs are included. (CS)

Described is an experiment that explores the relationships between conscious motor activity and autonomic processes such as breathing, blood pressure, and heart rate. Procedures for the construction and calibration of ball ergographs are outlined. (CS)

Describes a procedure for the separation of coleus pigments using simple supplies and equipment from home and the supermarket. (MA)

Presents a hands-on model that can be used to illustrate basic concepts such as carrying capacity, annual turnover, compensation, and diminishing returns. (MA)

Presents the process by which a sex education course was proposed, developed, and accepted by a school district. (MA)

Describes how to use a readability graph to determine the reading level of Biology textbooks. (MA)