Described are the techniques and results of using this tissue culture activity. Discusses the advantages of using such techniques in teaching alternation of generation life cycles to biology students. (CW)

Studies the polarization effect on water by cations and anions. Describes an experiment to illustrate the polarization effect of sodium, lithium, calcium, and strontium ions on the water molecule in the hydration spheres of the ions. Analysis is performed by proton NMR. (MVL)

Described is a demonstration of Snell's law using a laser beam and an optical fiber. Provided are the set-up method of the demonstration apparatus and some practical suggestions including "index matching" technique using vaseline. (YP)

Discusses how engineers will be educated in the twenty-first century, including workstation, teaching methods, teaching materials, and the college system. Describes some of the obstacles, such as small numbers of applicants, aging professors, poor preparation at high school level, and costs. (YP)

Defines engineering as the process of manipulating nature to benefit mankind and as a decision-making process rather than a problem-solving one. Describes the engineering decision-making process with a diagram. Suggests some changes in engineering education. (YP)

Describes a student programing project using microcomputers in an engineering design course. Provides some instructional procedures and student feedback from the project. (YP)

Described is a support program that guides prospective college teachers in teaching an introductory soil science laboratory course. Ideas are presented about the preparation for teaching and concerns of teaching assistants. A table citing classroom observation protocol is included. (RT)

Outlined are procedures used in a techniques class designed to develop communication skills in graduate students. The use of feedback in sessions, value of the class, student evaluations, and conclusions are explained. Tables include evaluation form, student opinion results, and mean scores on evaluation of major projects and assessment of the…

Identifies disciplinary patterns of philosophy of technology, business history, urban history, physical science history, technological history, and labor history in the continuum of micro perspective and technical determinism. Provides examples and suggests a new synthesis. (YP)

Discusses the development of a global program designed to provide a worldwide study of the earth, oceans, and atmosphere as a system; and to document changes that are occurring in this system. Explains the objectives and three core projects around which the experimental program has been organized. (RT)

Reviews discoveries and reports of dinosaurs to help put them into paleontological perspective. Proposes that discoveries not be announced from the field, but submitted to professional evaluation and peer review before release to the public. (Author/RT)

Develops a lab experiment for introductory instrumental analysis that requires interference studies and optimizing of conditions. Notes the analysis of the aspirin is by visible spectrophotometric assay. Gives experimental details and discussion. (MVL)

Describes a laboratory experiment designed to encourage laboratory cooperation among individual undergraduate students or groups. Notes each student contributes results individually and the exchange of data is essential to obtain final results. Uses the polarographic method for determining complex metal ions. (MVL)

Describes a laboratory experiment that measures the amount of ascorbic acid destroyed by food preparation methods (boiling and steaming). Points out that aqueous extracts of cooked green pepper samples can be analyzed for ascorbic acid by a relatively simple redox titration. Lists experimental procedure for four methods of preparation. (MVL)

Presents two experiments: the first one measures the heat of an exothermic reaction by the reduction of permanganate by the ferris ion; the second one measures the heat of an endothermic process, the mixing of ethanol and cyclohexane. Lists tables to aid in the use of the solution calorimeter. (MVL)