This research aims to devise a set of computer-based tools to meet the diverse needs of learners for comprehending a science learning unit, namely work. A model of computer-based tools on the learning unit for developing procedural knowledge for solving work problems was developed together with a set of teacher customization and collaboration…

Many educational researchers seem to concur with the idea that, among other factors, the teacher's teaching style has some impact on student learning and the perceptions students develop about science learning and the work of scientists. In this study, nine middle grades teachers' teaching styles were assessed using the…

The purpose of the current study is to investigate the feasibility of accounting for student performance in advanced high school coursework through the adjustment of high school grade point average (HSGPA) while separating out variables that are independently considered in the admission process, e.g., SAT/ACT scores, community affluence, type of…

This paper describes the effects of the implementation of constructivist techniques with interactive computer simulations on conceptual understanding of plant nutrition and critical thinking skills in heterogeneously grouped secondary biology classrooms. The study focused on three strategies for teaching plant nutrition: (1) traditional; (2)…

A quantitative synthesis of multivariate studies in science education during the past ten years yields evidence to support a model of achievement in science very much like that currently proposed in the literature of expert problem-solving. Despite previous claims, spatial visualization and verbal ability predict additional variance in achievement…

The National Research Council is coordinating the development of national standards for science education in grades K through 12. By the fall of 1994, National Science Education Standards will be completed and published. The standards will contain narrative descriptions of what all students should be able to do to engage and understand the natural…

When teachers search the literature for activities they can do with their students, they are exposed to science process vocabulary that is improperly used and ambiguous in meaning. This is particularly so with the science process skills of observing, inferring, and hypothesizing. This study examines the process understanding of science teachers at…

The purpose of this descriptive study was to create and test questions on stoichiometry with number ratios for quick mental calculations and to identify students' problem-solving strategies. The present study was a component of a more comprehensive investigation in which 7,441 German senior high school students were asked to work on 154 test items…

Within high school chemistry the topic of acids, bases, and pH is particularly challenging because robust understanding of the topic depends heavily on the student possessing deep concepts of atoms, molecules, ions, and chemical reactions. Since knowledge is acquired and stored in a dynamic structure, it was investigated in this study how…

To study the perceived needs of the rural science teacher a random sampling of rural and non-rural Tennessee teachers (200) responded to a survey which addressed several areas of concern. This paper deals only with questions concerning microcomputer use--the availability of computers for teachers' use, frequency of student computer use, frequency…

This course of study is aligned with the California State Science Framework and provides students the biology content needed to become scientifically literate and prepared for post-secondary science education. The course of study is divided into four sections. The first section provides an overview of the course and includes a course description,…

A series of case studies were undertaken by UNESCO to probe more deeply into the adequacy of science, mathematics, and technology curricula to meet national needs, and their appropriateness in relation to the rapidly-evolving nature of science and technology themselves. This fifth study, from Pakistan, has focused on the following 4 major areas:…

The main purposes of this study were to determine: (1) how high school students represent the physical phenomena of phase changes; (2) how they modify their representation of these physical phenomena to accommodate new observation; (3) what factors lead to student difficulty in modifying representations; and (4) how the…

This publication reviews the literature pertaining to teacher education in, about, and for environmental education. The first section includes the definition, goals, and objective of environmental education. The second section summarizes the recent and current status of environmental education in elementary and secondary schools in the United…

Both humanity and nature have suffered greatly from human insensitivity. Not only are the natural resources of the earth being depleted and its air, land, and water polluted, the financial resources of humanity are being wasted on destructive expenditures. The "Our Only Earth" series is an integrated science, language arts, and social studies…