Describes a simple and inexpensive apparatus which can be easily constructed and which provides a highly visible example of an apparently reversible reaction for undergraduates. (DF)

Describes a course based on three levels of student performance (achievement, rationalization, creative). Students work on the achievement level at their own rates with lectures available, but not mandatory. Laboratory exercises are required. Grading is dependent on the amount of fulfillment of all three levels. Year-end assessment was determined…

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

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)

In this second article on thin layer chromatography six kinds of experiments are suggested for science teachers to use in schools. (PS)