Describes a single technique for an enzyme assay of catalase. The method shows that vegetable seeds submitted to pre-sowing 'hardening' cycles of imbition and drying have greater catalase activity and more rapid germination than do the controls. (LS)

Describes an inquiry procedure to determine whether soft drinks are pressure or vacuum packed and then utilizes the "pop" theme for several other science activities. (LS)

Describes an undergraduate organic chemistry experiment in which stilbene is cyclized to phenanthrene by irradiation for 24 hours in a photochemical reactor. (MLH)

Provides a description and evaluation of a university's recently instituted physics learning center. Photos and text reveal some uses of the facility. (Author/CP)

Describes the contents of a BIOS i Kit as: (1) guide to initial learning possibilities; (2) state of knowledge articles; (3) sample materials for observation, identification, and/or experimentation; and (4) evaluation materials. (LS)

Presents a set of integrated experiments for the undergraduate inorganic chemistry laboratory, designed with the belief that a related set of syntheses, reactions, and characterization techniques sums to a greater learning experience than an equal number of unrelated experiments. (MLH)

Describes sources and housing of laboratory rats for use in investigating behavior. (LS)

Describes the apparatus of a chemistry kit that also contains a pupil's manual and a teacher's guide. (LS)

Describes how to construct thin layer chromatography apparatus by using a sheet of glass, glass strips, epoxy resin and a chromatographic plate. (LS)

Describes an experiment demonstrating genetic transformation that opens up many areas of laboratory work and discussion with students. (LS)

Describes the insertion reaction using the insertion of carbenes into carbon-hydrogen bonds as an example. Outlines an experiment that will illustrate dihalocarbene insertions into diisopropyl ether. (GS)

Presents an investigative sequence of experiments addressed to the topic of photosynthesis. (BR)

A report of the growth and present status of the mini-computer based, time sharing laboratory at the University of Indiana, which describes the system hardware, software, and applications in psychological experimentation. (EH)