Describes an undergraduate biochemistry experiment that utilizes gel electrophoresis of a crude extract and the partially purified gel filtrate. (MLH)

This report presents the results of a national survey of environmental laboratories conducted by the Alabama Department of Health for the purpose of soliciting information on certain selected operating and management parameters. The survey was directed primarily to state environmental laboratories, but included Federal, local and private…

Describes an exercise that teaches Mendelian inheritance using human traits which students find exciting and relevant. (LS)

Foreign students learning English often do not correct their own errors when working in the language laboratory. It appears that students fail to respond if the material to be processed, answered or repeated is either too long or cannot be interpreted. A repeat-loop tape system may answer some problems. (CHK)

The University of Southwestern Louisiana has made a previously required language laboratory course an elective course and has changed the regular two-hour-per-week requirement for those who enroll to a twenty-hour semester total requirement. Laboratory equipment presently in use is shown and described. (SCC)

In order to expand the exercise capabilities of the language laboratory, the instructional place of the daylight projector is discussed, with regard to theories of language and of learning, and with attention to defined learning groups, learning goals and the technical possibilities of a combination of media. (Text is in German.) (IFS/WGA)

By using a computer to simulate experimental situations, engineering laboratory courses can provide more ambitious experiments as well as experiments demanding more calculations. (SD)

Describes a cassette tape remedial language laboratory system for improvement in English language articulation. (CH)

The purpose of this document is to identify potentially hazardous substances that may be in use in many school laboratories and to provide an inventory of these substances so that science teachers may take the initiative in providing for the proper storage, handling, use, and if warranted, removal of hazardous materials. The document consists of…

Described is a simple experimental system, which uses radioactive carbon dioxide to study whole leaf photosynthesis under a variety of conditions. Other experiments and simple apparatus for the experiments are also described. (Author/RH)