Presented is an activity in which students make models of viruses, which allows them to visualize the shape of these microorganisms. Included are some background on viruses, the biology and geometry of viruses, directions for building viruses, a comparison of cells and viruses, and questions for students. (KR)

Described is an activity in which students learn how a battery produces electricity, why at least one electrode is destroyed when electricity is produced, and how electrolytes and temperature affect the process. Needed materials and directions for building a battery are listed. (KR)

Presented is an activity in which students work in research teams to gather data, integrate computer analyses, and discover the relationships between variables by using a second class lever. A diagram of the lever, a list of processes involved in this activity, and an idealized data table are included. (KR)

Described is an earth science course in which students develop projects throughout the school year. Essential behavior goals, a description of projects for developing cooperative group skills, and a student evaluation form are included. (KR)

Discussed is a method for judging science fair projects considered to be more accurate than just an averaging of scores. The use of many categories so that the number of projects in each is relatively small is proposed. The advantages of using the consensus method are described. (KR)

Discussed is the difference between reading fiction and reading science. The importance of reading orally and developing an awareness of text structure are discussed. A checklist and questions for analyzing the language structure of science textbooks are included. (KR)

Developed is an interdisciplinary unit that deals with global warming and the greenhouse effect. Included are 10 lessons that can be used to supplement existing plans or used as a basis for developing a new unit. Included are modeling, laboratory, graphing, role-playing, and discussion activities. (KR)

Described is how tests that accompany texts can be effective if items selected relate to topics stressed in class. Identified are problems commonly found in these types of tests and directions on how to improve problem questions. (KR)

An outdoor activity that demonstrates the Doppler effect is described. Class predictions are verified by actual involvement in collecting data. Presented is a method of analyzing data. Safety concerns are discussed. (KR)

Discussed are positions on the topic of creationism. The dichotomy between science and religion is analyzed. Middle positions are highlighted and the fundamental issues clarified. Examples that illustrate historical changes in scientific thought are included. (KR)

Described are several laboratory investigations that may be used to introduce biochemistry. Topics covered include carbohydrates, lipids, proteins, and metabolism. Reactions, stock solution formulas, and procedures are listed. Emphasized are individualizing work, designing alternative investigations, solving problems, and drawing conclusions. (KR)

Eight activities for use in the science classroom are presented. Included are insect collecting, laboratory procedures and safety, recycling, current events, variable manipulation, scientific method, electricity, and mechanics (Newton's Second Law of Motion). (KR)

Described is the generation of a scale model of the solar system and the milky way galaxy using a computer spreadsheet program. A sample spreadsheet including cell formulas is provided. Suggestions for using this activity as a teaching technique are included. (CW)

Problem solving is defined and characteristics of good problem solvers are highlighted. The cognitive processes used in problem solving are discussed. Suggestions for methods which can be used to teach problem solving are provided. Research implications from mathematics education are listed. (CW)

Contrasted are DNA viruses, RNA viruses, and RNA retroviruses. The structure, genome, and replication of retroviruses are discussed. The discovery, structure, and action of the HIV virus are described. A list of 17 references is included. (CW)