Gravity affects everything we do. Only in very recent years have we been able to carry out experiments in orbit around the Earth and see for the first time how things behave in its absence. This has allowed us to understand fundamental processes better and to design new materials using this knowledge. (Contains 6 figures.)

Considers the nature and extent of bias toward experimentation and against correlational studies. Argues for the use of correlational studies and describes a field-tested approach to enabling students to direct open-ended investigations of this type. (45 references) (JRH)

Analyzes the role of experiments in science teaching, and applies this analysis to the teaching of Millikan's experiment in physics. Critically examines an article written by T. J. Harvey entitled Millikan made easy'' which was previously published in The School Science Review. (JR)