Eighteen high school science students were involved in a study to determine what attributes in the problem statement they need when representing a typical osmosis problem. In order to realize this goal students were asked to solve problems aloud and to explain their answers. Included as a part of the results are the attributes that the students…

Computer interfaced electrostatic charge sensors allow both qualitative and quantitative measurements of electrostatic charge but are quite sensitive to charges accumulating on modern synthetic materials. They need to be used with care so that students can correctly interpret their measurements. This paper describes the operation of the sensors,…

This document focuses on evidence from problem solving case studies which indicate that analogy, extreme case analogies, and physical intuition can play an important role as forms of nonformal reasoning in scientific thinking. Two examples of nonformal reasoning are examined in greater detail from 10 case studies of "expert" problem solving.…

Students have well-formed but incorrect theories of simple motion. As children, they interpret many phenomena related to motion before encountering any formal science education. Since most adults have misconceptions, children's questions are not answered correctly, so the misconceptions persist. Thus, every science teacher must face the prospect…

Gal'perin's instructional theory of problem solving is described. This theory of stage-by-stage formation of mental actions was chosen as a theoretical basis for the construction and evaluation of courses in higher education, particularly in science and technology. A Programme of Actions and Methods (PAM) for problem solving in science,…

Presents a new method to teach the subject of evaporators which is both simple enough to use in the classroom and accurate and flexible enough to be used as a design tool in practice. Gives an example using a triple evaporator series. Analyzes the effect of this method. (CW)

Describes the construction of a chemistry laboratory. Also discusses the place of science in school technology teaching, a study of students' understanding of simple quantitative relationships in chemistry, and the objectives of school physics. (JN)

This study examines the changes in students' conceptual thinking and problem solving abilities. Conceptual thinking skills and problem solving abilities are important factors for medical school applicants as diagnosis and treatment procedures strongly depend on these skills. Underrepresented minorities in medicine is a concern in United States,…

Describes a project designed to develop 50 tutorial lessons for students having difficulty with specific types of physics problems. Because the intent was to tutor problem solving rather than teach physics concepts, lessons were designed for use after classroom instruction had occurred. Includes project goals, development, implementation, results,…

Cites changes to occur on the Medical College Admissions Test to include: a reduction from six to four sections, biology and physics content-specific sections to absorb chemistry, elimination of multiple-choice questions to a problem-solving format, and the inclusion of graded essay questions. (RT)

Uses a discrepant event to teach students about volume and area. Outlines directions for class demonstration, needed materials, questions, a story problem, and related activities to perform this assignment. (Author/RT)

Examined are boys' and girls' achievement from a developmental perspective over the three years of science curricula. Results show the overachievement of girls relative to boys in both chemistry and physics in grades 10 through 12. Discusses implications of the results. (YP)

Describes the importance of estimation in science for planning projects, conducting experiments, and developing theories. Defines order of magnitude. Provides explicit mathematical equations and calculations to estimate answers for seven provocative physics problems. Includes nine additional open-ended problems with hints and solutions. (PR)

Nine articles discuss research on cooperative learning with computers and how student interactions at the computer facilitate learning. Current research on cooperative learning methods and computer-assisted learning; and microcomputer-based group problem solving, social-cognitive behaviors, higher order thinking, interdependence, autonomy,…

Presents a problem to determine conditions under which two identical masses, constrained to move along two perpendicular wires, would collide when positioned on the wires and released with no initial velocity. Offers a solution that utilizes the position of the center of mass and a computer simulation of the phenomenon. (MDH)