PART I. The concentration of nickel in some soils may be
insufficient to meet the requirements of enzymes such as
urease in soybeans and hydrogenase in Rhizobium. Nickel
availability in soils was examined by measuring microbial
urease activity in soils which were treated with glucose
and urea. Supplemental nickel was...
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 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 purposes of this study were as follows: (1) to
determine if the use of selected supplementary instructional
materials, in the form of either computer assisted
instruction or additional readings and worksheet
presentations, could influence test scores relating to
science achievement for fifth grade students, and (2) to
determine whether...
The purposes of this study were to develop a valid and
reliable attitudes toward science instrument in the Thai
language and determine the differences in attitudes toward
science and achievement in physical and biological science
of Thai boys and girls in lower secondary education.
The population consisted of 709 students,...
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....
This study was undertaken to analyze the opinions of
elementary school teachers in Korea about actual and desired
levels of computer education and the sources of computer
anxiety, with the object of developing guidelines for
a teacher training program. A survey instrument was developed
and tested to provide basic sample...
In the context of forest products, a cutting order is a list of dimension parts along with demanded quantities. The cutting-order problem is to minimize the total cost of filling the cutting order from a given lumber grade (or grades). Lumber of a given grade is supplied to the production...
The Macrocheles glaber species group contains many
of the common mites which are associated with the dung
of domestic animals. Species in the glaber group have
been investigated for their use as biological control
agents of synanthropic flies.
Over 10,000 slide-mounted specimens of Macrocheles
in the OSU Acarology Collection and...