Recommends the use of a model of DNA made out of Velcro to help students visualize the steps of DNA replication. Includes a materials list, construction directions, and details of the demonstration using the model parts. (DDR)

Provides an account of efforts to develop a technologically integrated curriculum and an understanding of the differences between the context and meaning of the term biotechnology. Incorporates the teaching of computer skills into the introductory biology course. (DDR)

Summarizes the process of a reform effort in biology instruction. Describes the use of a case study about cholera epidemics and explains how it enables critical objectives in the science curriculum to be addressed. (DDR)

Reports on the involvement of scientists in K-12 science education and their perception of science education. Findings may prove useful in determining how scientists might best contribute to science education in the future. (DDR)

Argues that methods used to teach English composition can be applied to biology classes. Techniques discussed include clustering, active reading, peer editing, creativity, use of clear language, logical thought, and appropriate structure and format. (DDR)

Provides an exercise designed to give students an appreciation for the genetic basis of behavior. Employs the phenomenon of glucose aversion as an example of evolution by mutation and accelerated natural selection, thereby revealing one of the ways in which organisms adapt to human interference. (DDR)

Argues that the common assumption about the lack of intermediate forms in evolutionary history is inaccurate and misleading. Points out that there are many transitional forms, although special creationists refuse to recognize them as such. (DDR)

Describes a laboratory exercise that simulates the spread of an infectious agent among students in a classroom. Uses a modified Enzyme Linked ImmunoSorbent Assay (ELISA) to provide students with experience using an authentic diagnostic tool for detecting human infections. (DDR)

Presents an exercise that introduces students to scientific measurements using only metric units. At the conclusion of the exercise, students eat the experiment. Requires dried refried beans, crackers or chips, and dried instant powder for lemonade. (DDR)

Introduces a method for constructing phylogenies using molecular traits and elementary graph theory. Discusses analyzing molecular data and using weighted graphs, minimum-weight spanning trees, and rooted cube phylogenies to display the data. (DDR)

Presents a classroom technique designed to aid student understanding of science that involves a flow chart of the scientific method. Affords a conceptual framework for organizing many research concepts taught in introductory science classes. Contains 19 references. (DDR)

Describes the use of dioramas in natural-history museum exhibits. Discusses the roots of dioramas, the process of creating an illusion, the purposes of dioramas, and criticisms of the use of dioramas. Contains 20 references. (DDR)

Examines the role mistakes play in the molecular evolution of bacteria. Discusses the interacting physical, chemical, and biological factors that cause changes in DNA and play a role in prokaryotic evolution. (DDR)

Reviews the life and work of the famous invertebrate zoologist Libbie Henrietta Hyman. Focuses on her work at the American Museum of History and her role as informal mentor and valued colleague and collaborator to zoologists all over the world. Contains 17 references. (DDR)

Presents an analysis of the medical records of Union soldiers in the American Civil War. Shows a cause and effect relationship between disease, infection, and death. Discusses the lack of medical knowledge at that time, the problems with surgical infection and sanitation, and surgical innovations. (DDR)