The purpose of the study was to analyze and compare the teaching
styles of a trial group of junior secondary science teachers
trained to use and using new materials, and a control group of teachers
using traditional materials. The new materials consisted of portable
science kits, demonstration apparatus, teacher's guides,...
The purpose of this investigation was to determine if either of
two selected commercial games, when used by seventh-grade mathematics
teachers, would significantly improve students' (1) attitudes
toward mathematics, (2) quantitative cognitive abilities, and (3) nonverbal
cognitive abilities.
Equations, a mathematics game, and Tac-Tickle, a strategy
game, were chosen as...
The study was undertaken to determine if a university-level
preliminary class concentrating upon the formalism and techniques
germane to success in science would serve to improve minority
academic performance, minority here being defined to include certain
Asian Americans, Black Americans, Native Americans, Spanish
surnamed Americans, and those white Americans who...
Three areas of liquid state theory are considered.
First, Monte Carlo computer simulation of a two-dimensional hard
disk fluid with an imbedded ellipse was undertaken to determine how a
non-spherical molecule affects intermolecular ordering. The
elliptical molecule (with axial ratios of 2, 5 and 10) altered the
isotropic distribution of...
Ribonucleotide reductase from Rhizobium meliloti has been
partially purified and characterized. The enzymatic reduction of
ribonucleotides to deoxyribonucleotides is dependent upon B₁₂ coenzyme
and dihydrolipoate.
B₁₂ coenzyme was more effective than B₁₂ coenzyme analogues
in the reductase reaction. The affinity of the R. meliloti
reductase system for B₁₂ coenzyme was...
The objectives of this study were to construct and
develop a two-tiered multiple-choice test for the measurement
of student misconceptions in optics at the level of
secondary education in Thailand, as well as to investigate
the effects of gender, grade level, and type of school upon
levels of student misconceptions....
The thermodynamic and structural effects of highly anisotropic, short-ranged attraction are investigated for single- and four-site interaction models using Wertheim's multi-density graph theory of chemical association. Both models consist of associating hard spheres, where the saturable attraction sites are described by conical wells centered in the hard core and evaluated...