Describes a set of laboratory activities in which students construct a model for the relationship between potential difference (measured in volts) and current (measured in amperes) in a DC circuit with a single resistor. (SAH)

Explains the infection process of T-4 phage and provides the steps of experimentation on bacteriophages. Uses Escherichia coli and a virus mixture to observe phage infection. Points out the importance of safety and lists cultures, media, and disposable lab equipment for a group of students. (YDS)

Describes how to collect micrometeorites and suggests a number of related activities such as determining the number of meteors entering the atmosphere and determining the composition of the micrometeorites. (BR)

Errors in determining the effectiveness of mouthwashes, disinfectants, and other household products as antibacterial agents may result from using broth cultures and/or irregularly shaped bits of filter paper. Presents procedures for a better technique and, for advanced students, two additional procedures for introducing quantitative analysis into…

Provides the National Science Teachers Association guidelines to enrich education by encouraging students to observe living organisms and to learn proper respect for life. Major areas include: care and responsibility for animals in the classroom; experimental studies of animals in the classroom; and research investigations involving vertebrate…

An unusual science program which centers around a vivarium and is based on the notion that students learn science by doing it, not just talking about it. (DF)

Presents food science experiments designed for high school science classes that aim at getting students excited about science and providing them with real-life applications. Enables students to see the application of chemistry, microbiology, engineering, and other basic and applied sciences to the production, processing, preservation, evaluation,…

Presents the "Before Technology and After Technology" lab where students first complete a simple lab and graph the data by hand and then repeat the lab using graphing calculators. Enables students to see how technology can make data collecting, graphing, and analyzing more fun. (JRH)

This activity attempts to address a lack of emphasis in most science curricula on the microbial activity that determines soil's health. Presents an experiment that involves students in seeing how the enzyme assay is used as an indicator of soil quality and microbial activity. Contains procedures and discussion questions. (LZ)

Describes an investigation for physical science and chemistry students that engages students both physically and mentally. (ZWH)

Describes an activity that demonstrates the effect of specific variables on the acidity of coffee. (ZWH)

Focuses on the curriculum movement. Discusses the educational conditions under which new courses would be developed. Explains the differences between the new science courses and traditional courses. First published in 1962. (YDS)

This article presents an activity for early-in-the-year parents' night. The beginning of a new school year is an exciting time. The authors, as teachers, like to capture that excitement by engaging their 10th-grade biology students in an inquiry project demonstrating the nature of science and scientific inquiry. They developed the Next Step…