Describes various techniques for conical chromatography together with advantages and disadvantages. (DF)

Problems in constructing and revising mathematical workcards are discussed, with four sample workcards included. The Fife Mathematics Project, incorporating workcards and other instructional techniques, is described. (DT)

Twelve new experiments in biology are described by teachers for use in classrooms. Broad areas covered include enzyme action, growth regulation, microscopy, respiration, germination, plant succession, leaf structure and blood structure. Explanations are detailed. (PS)

This transition, observed with an inexpensive ultraviolet photometer, is a potentially useful experiment for an advanced freshman class because it introduces several concepts of general physical interest. (DF)

Illustrates the use of a flow chart to facilitate planning of laboratory exercises by two chemical examples. (AL)

Describes a program that attempts to bridge the gap between class lectures and laboratory. Students are involved in individual investigations. Effective use of undergraduates is made for instructional purposes. (PS)

Grade 8 students using the Introductory Physical Science course improved their scores on a test of science processes (observing, comparing, classifying, quantifying, etc.) after studying the first five chapters of the materials. Some evidence supporting a hierarchy of process skills is reported. (AL)

The three major dimensions in which laboratories differ are focus," modality," and participant-mix." (Authors)

Students can do their work on schedules suited to their individual needs. (Author)