Presents a set of experiments that explore variables within the steps of the filtration process. (CS)

Described is a nontraditional approach to the evaluation of laboratory instruction in general physics courses which focuses on the identification of telling questions, key concepts and basic phenomena involved in the experiment, description of the method used, and the results. (DS)

Reports on an experiment designed to evaluate the effects of "slowed speech" on language students' achievements in listening comprehension. Two second semester college level French classes provided the experimental and control groups. Contrary to expectations, pre- and postexperiment tests showed a significant drop in the experimental…

Describes the objectives and format of a mathematics course offered at Carl Sandburg Community College (IL) which supplements classroom experiences with laboratory experiments. Enumerates the educational benefits of the laboratory approach and discusses the students' evaluation of the course and its format. (AYC)

Describes how satellites and other tools of space technology have transformed classical geodesy into the science of space geodynamics. The establishment and the activities of the French Center for Geodynamic and Astronomical Research Studies (CERGA) are also included. (HM)

Describes the Math Learning Center at Palm Beach Junior College which offers 21 courses of study, including all math courses through trigonometry and 11 general education math courses. Examines the implementation process and various program features. (DR)

A research internship program for undergraduate college students is described. The program, which emphasizes "hands on" experiences for women students, is evaluated by the use of a follow-up study of the graduates. (SA)

Tests given over several semesters of university language laboratory work showed that laboratory periods longer than 35 minutes become unproductive because of fatigue. A change of procedure after 30 minutes--such as test exercises--will activate the learners' power of concentration for another 15 minutes. (IFS/WGA)

Describes an electronic technique for making a series of timing measurements in quick succession, using the signal from one photodiode. Two undergraduate experiments, one on linear momentum and the other on angular momentum conservation, are included. (HM)

Procedures are described for preparing spores from the fern, water clover, for an educational demonstration of germination and sexual reproduction. The demonstration is recommended for biology instructors who want to illustrate the alternation of phases in plants. (SA)

The application of chemistry to the justice system is presented. The role of the forensic chemist, historical development of forensic laboratories, and tools of the criminalists are also discussed. (HM)

This undergraduate biochemistry experiment introduces the student to techniques for cell lysis and release of protein from the cell in soluble form, ion exchange and gel chromatography, and dialysis. (Author/BB)

Describes an experiment suitable for an instrumental analysis or quantitative analysis course. (BB)

This experiment can be used as either a demonstration or a laboratory activity illustrating the principles of affinity chromatography to purify an enzyme. (BB)

Described is an easy to assemble, and inexpensive, torsional pendulum which gives an accuracy of measurement of the modulus of rigidity, G, comparable to the accuracy obtained with the more expensive commercially available student models. (Author/GA)