Study of strategies and procedures of 170 students and 40 teachers when solving chemical equilibrium problems found misconceptions emerging through: misapplication of Le Chatelier's Principle, use of rote-learning recall, incorrect control of variables, limited use of chemical equilibrium law, lack of mastery of chemical equilibrium principles,…

Exposure of an experimental group of (n=33) college freshmen to teaching experiments dealing with stoichiometry problems based on the concept of limiting reagent showed greater improvement in posttests than the (n=39) student control group and observed that some students protect their core beliefs by ignoring conflicting data. (Author/MKR)

Verified the efficacy of concept and Vee mapping heuristics under cooperative, cooperative-competitive, and individualistic whole-class learning conditions in improving (n=808) eighth graders' achievement in ecology and genetics. Experimental groups achieved significantly better than the control groups; students in cooperative-competitive…

Conducted an interpretive investigation of a first-time science teacher that focused on an examination of beliefs and metaphors associated with the teacher's roles as manager, assessor of student learning, and facilitator of learning. Outlines the development of metaphors that guided the teacher in reconceptualizing her role as a science teacher…

Examines gender differences in science achievements and attitudes during the middle grades. Reports that female students do not lag behind in science achievement tests and course enrollments, but have less positive attitudes toward science and less interest in science careers. Science attitudes and career interests vary according to gender as well…

Examines the way teachers humanize science by focusing specifically on their use of analogies and metaphors. Explores classroom discourse in order to examine how teachers creatively use analogies to clarify an idea, develop a concept, or communicate a message leading to new research questions about the cultural, linguistic, and social…

Investigated a microcomputer-based system for the diagnosis and remediation of three Aristotelian alternative conceptions of force and motion held by eighth-grade physical science students. Reports that computer simulations exemplifying canonical conceptions facilitate alteration of students' naive conceptions to a significant degree. Suggests…

Used multiple-choice instruments and classroom observations of elementary education majors (n=116) to examine the importance of cooperative incentives and heterogeneous grouping in cooperative learning. Results indicate no differences in the achievement of students in the group accountability and individual accountability conditions and do not…

Investigated the nature of biology teachers' global content understandings, and sources and formation of subject matter structures (SMSs). Reports that the initial formation of SMSs was credited to college content courses and modified by the act of teaching. Variables that differentially affected SMS translation included teacher intentions,…

Investigates the effects of two context variables on the performance of seventh-grade students on a qualitative and numerical proportional reasoning test. Explores the nature of the relationships between rational number skills, qualitative reasoning about ratios, and numerical proportional reasoning. (Author/YP)