Describes two easily applied mathematical theorems, Budan's rule and Rolle's theorem, that in addition to Descartes's rule of signs and intermediate-value theorem, are useful in chemical equilibrium. Provides examples that illustrate the use of all four theorems. Discusses limitations of the polynomial equation representation of chemical…

Describes the experiences of one instructor in designing and implementing a short course in scientific French for upper level students majoring in applied biology at Glasgow College. Materials used and aspects of scientific language chosen are briefly discussed. (LMO)

Describes a three-day classroom activity combining criminal investigations and scientific skills, especially observation skills. Provides detailed classroom procedures with an illustration of eight basic fingerprint patterns and a classification chart. (YP)

Discusses problem-solving strategies and the successful strategy used to solve stoichiometric problems in general college chemistry courses. Reports that rereading problems, recalling a related concept, and reasoning deductively/inductively are the most heavily used strategies among 13 categories. (YP)

Describes the monitoring of the redistribution of blood by using a technique which detects changes in the center of gravity of the body. Provides information about the principles and application, construction of apparatus, operating routines, and use of the computer as a recorder. Includes suggested investigations, demonstrations, and diagrams.…

Analyzed is the role of formal logic in the development and investigation of science education. Investigated are the use of logical relations in the learning of abstract concepts and the development of efficient cognitive processes in the context of science curricula. (Author/YP)

Investigates Israeli students' (grades four through nine) knowledge regarding the concept of a "gas" prior to and following instruction. Reports that students do not spontaneously develop a general idea of gas prior to instruction, and only after instruction do they first acquire this knowledge. Suggests three implications for…

Describes guidelines that can be used by teachers to promote student learning. Suggests that realistic expectations, the use of activities, demonstrations, labs, a variety of teaching methods, and good discipline are important to higher-level motivation of lower-level students. Discusses testing of mildly handicapped children, and dealing with…

Explains the use of constructing and analyzing analogies as a way to enhance student understanding and recollection of scientific concepts. Offers suggestions for topics including energy activation, phases of matter, electron transitions, equilibrium, covalent bonds, wave and particle duality, reaction types, ideal versus real gases, and oxidation…

Describes an experimental procedure to acquaint inorganic chemistry students with stereochemical concepts using tris-(2,3-butanediamine)cobalt(III). Notes two isomeric forms exist and both form metal chelates. Separation is accomplished by chromatography and analysis is by NMR and infrared spectroscopy. Provides spectra of isomers. (MVL)

A decision tree which can be used to help students determine the proper stereochemical relationship between two isomeric structures is presented. The proper use of this chart is discussed. (CW)

Two demonstrations are discussed in this segment including "A Eutectic Mixture with Medicinal Applications" and "The Human Salt Bridge." Procedures, equipment, and concepts shown are detailed. (CW)

Presented are three demonstrations: "The Construction and Use of Commercial Voltaic Cell Displays in Freshman Chemistry"; Dramatizing Isotopes: Deuterated Ice Cubes Sink"; and "A Simple Apparatus to Demonstrate Differing Gas Diffusion Rates (Graham's Law)." Materials, procedures, and safety considerations are discussed. (CW)

Described is a method of teaching laboratory report writing to undergraduate students. The sections of student lab reports are reviewed and compared with scientific papers. The writing process including drafts and peer review is discussed. Results of the use of this method are provided. (CW)

Presented are studies which confirm the idea that factors related to the format, the order of items presented, and the presentation style can affect the impact of information and student recall. Discussed are dynamic presentations, enumerated items, impact and timing, pairing of items, data summaries, and information load. (CW)