Describes two methods for rearing small aquatic invertebrates using submerged surfaces in an unfiltered current of water where fish are present. Presents suggestions on how to use the invertebrate communities in the classroom. (JRH)

Provides examples of animals in which growth occurs without cell division. Indicates that this phenomenon (called cell constancy or eutely) is an oddity of development that has arisen independently in several animal groups. (JN)

A simple method of studying thyroxine-induced resorption of tadpole tails in vitro is described. This procedure demonstrates that resorption is dependent on thyroxine and requires protein synthesis. It introduces students to the use of tissue culture methods. (Author)

Describes the use of a creationist-derived lesson plan in a nonmajor zoology class to demonstrate students' grasp of scientific concepts and principles. (WRM)

Offers various reasons why the study of parasites and the diseases they cause should be incorporated into classroom biology discussions. Examples of several parasitic diseases and their ecological significance are provided. (JN)

Described are methods for locating, collecting and culturing ladybird beetles. Included are necessary equipment for feeding and breeding the insects and modifications for various species found in Great Britain. Overwintering spots of various species are also listed. (CW)

Some of the students in Southern Illinois University's introductory zoology course were deficient in certain skills. The design of self-instructional modules that would be educationally sound and help overcome some problems encountered in this course is discussed. (MLW)

Discusses beavers and their geomorphic impacts on their environment. Considers dam building, bank burrowing, and canal building. Suggests using the beaver as a classroom and field trip example to illustrate animals' effects on the physical landscape. Provides a review of published works on beavers in their roles as geomorphic agents. (DK)

Examined the extent to which students' alternative conceptions changed as a function of age. Reports that many alternative views remain intact throughout the school years. Provides several suggestions for teaching and research within the context of a neoconstructivist view of learning. (Author/YP)

This packet contains four science learning activities on the subject of animal science that can be used in agricultural education courses. The activities cover these topics: (1) identifying internal parasites in domestic livestock; (2) the effect of feed preparation on feed palatability and consumption; (3) determining the absorption abilities of…

This packet contains six science learning activities that can be used in agricultural education courses. The activities cover these topics: (1) determining the effects of soil drainage on plant growth and development; (2) determining the effect of soil compaction on plant growth and development; (3) inoculating legume seeds to promote nodule…