Discusses how the reputation of "Principia" was created and maintained. Indicates the difficulties of identifying a single unambiguous meaning for the text. Shows that knowledge of Sir Isaac Newton makes little difference to understanding the later impact of the work. (CW)

Compares knowledge and attitude levels of elementary, secondary science, and other secondary teachers on water resources. Evaluates an interactive computer simulation, the "Water Resource Management Simulator" (WRMS), as a training tool for inservice teachers. Users of WRMS exhibited higher knowledge scores than nonusers. No differences…

Discusses the need for quality computer software for science instruction. Argues that very little software is currently available that uses the computer's capabilities to provide quality science instruction. Describes microcomputer tutoring systems under development at the University of Pittsburgh that are intended to significantly add to the…

Describes a chemistry lab experiment in which a microcomputer is used to graph data. In the experiment a catalyst is used to decompose a commercial bleach. The computer's game port is used with a potentiometer to plot the volume of oxygen gas produced versus elapsed time. Courseware information is included. (TW)

Describes a study in Nigeria comparing achievement in biology with a student's preference for cooperative or competitive learning situations. Proposes that rural children prefer cooperative learning strategies while urban children prefer competitive ones. Presents data proposing that learning preference (cooperative vs competitive) directly…

Describes the implementation of a trajectory-plotting program for a microcomputer; shows how it may be used to demonstrate the focusing effect of a simple electrostatic lens. The computer program is listed and diagrams are included that show comparisons of trajectories of negative charges in the vicinity of positive charges. (TW)

Discusses how to address the concept of chemical equilibrium through the use of thermodynamic activities. Describes the advantages of setting up an equilibrium constant in terms of activities and demonstrates how to approximate those activities by practical measures such as partial pressures, mole fractions, and molar concentrations. (TW)

Discusses ways of teaching students about how to assign R (rectus) and S (sinister) labels to enantiomers by using their hands as models. The chirality of the human hands follows the Cahn-Ingold-Prelog Rules for assigning enantiomers and infers the correct chirality of molecules shown in two-dimensional drawings. (TW)

Provides three descriptions of demonstrations used in various chemistry courses. Includes the use of a simple demonstration model to illustrate principles of chromatography, techniques for using balloons to teach about the behavior of gases, and the use of small concentrations of synthetic polyelectrolytes to induce the flocculation hydrophobic…

Describes the metabolic processes of complex lipids, including saponification, activation and transport, and the beta-oxidation spiral. Discusses fatty acid degradation in regard to biochemical energy and ketone bodies. (TW)

Proposes a two-stage experimental approach that combines preparative chemistry and polymer characterization. Describes the simple organic synthesis of a plasticizer, the dioctylphthalate, and its direct use in the preparation of a styrene/divinylbenzene network copolymer. Discusses how to evaluate the physical properties of the resulting plastic.…

Discusses various developments in both science and theology following the work of Charles Darwin on evolution. Differentiates between the facts regarding evolution and the theory of natural selection as a mechanism for evolutionary change. Warns that the differences between facts and theory have not been adequately emphasized by scientists. (TW)

Describes a study which sought to determine whether differences existed between girls and boys in terms of their concept structure interrelatedness competence (ConSIC) in the areas of physical science, life science, earth sciences, between sciences, within sciences and across all sciences by measuring ConSIC. (ML)

Using data on approximately 2,000 students drawn from three talent searches conducted by the Study of Mathematically Precocious Youth, this study investigated the relationship of possible sex differences in science achievement to sex differences in mathematical reasoning ability. (BS)

The study sought to determine how integrating science and mathematics in a seventh-grade physics unit affected attitudes and achievement in science. Two above-average and two average classes were involved. Scientific attitudes of the average integrated group improved, as did achievement of the above-average integrated group. (MNS)