Examines the extent and nature of Year 10 students' model-based reasoning in a laboratory investigation that considered the influence of six factors on electrical resistance. Finds that spontaneous use of the electron-drift model of metals in explanations increased over the duration of the task, but the explanations were restricted to mainly…

Describes the physical and chemical structure of zeolites and presents a series of experiments demonstrating some of the properties of these chemicals, including investigations of the hardness of tap water and the water-softening capabilities of various laundry detergents. Contains 13 references. (WRM)

Attempts to find connections and bridges between social constructivism and Piagetian constructivism so that both may be enriched, to the benefit of science teaching. (Contains 95 references.) (Author/WRM)

Examines the effectiveness of a standards-based science intervention program on the science achievement and attitudes of middle-grade students attending a five-week academic enrichment program. Finds that students' achievement and attitudes were higher following participation in the program. (Contains 22 references.) (Author/WRM)

Describes the development and use of two computer simulations for investigating systems thinking and environmental problem-solving in children (n=92). Finds that older children outperformed younger children, who tended to exhibit magical thinking. Suggests that seemingly isomorphic environmental problems may not be interpreted as such by children.…

Proposes that instruction targeted at conceptual change should be designed to consider cognitive development and capitalize on what is known about social development. Examines instructional strategies (Concept Oriented Reading Instruction, Discussion Webs, collaborative writing, learning logs, and divided page journals) that promote middle school…

Results of a multiple choice instrument, (sample of convenience, n=45 education students), indicate that preservice and inservice science teachers had similar views. Views are classified as "Naive,""Has Merit," and "Realistic." The majority (79%) of the inservice teachers and the largest percentage of the preservice…

Describes a laboratory exercise that takes advantage of the abundant number of species of goldenrod galls that exist in the environment to explore a question concerning the behavior of the female gall-forming insects as they lay eggs on the goldenrod plant. (ZWH)

Presents information and data on an experiment designed to test whether different atmosphere compositions are affected by light and temperature during both cooling and heating. Although flawed, the experiment should help students appreciate the difficulties that researchers face when trying to find evidence of global warming. (PR)

Describes the design of a biochemistry course that uses problem-based learning. Provides opportunities for students to question, dispute, confirm, and disconfirm their understanding of basic concepts. Emphasizes self-correction through dialogue. Topics covered include amino acids, metabolic pathways and inherited disease, proteins, enzymes and…

Assesses students' learning of evolution by natural selection within four different sections of an introductory biology course where each section used a different combination of curricular materials and instruction. Reports that comparisons between sections support the use of paired problem-solving instructional strategy in conjunction with the…

Examines motivation in high school students' conceptual change about physics principles, and college students' motivation for biology learning. Finds grades and interest were important, but students did not report the importance of social support. Suggests similar motivations are important in both conceptual change and assimilation and help…

Describes a study of high school students' and chemistry teachers' understanding of the gas laws which focused on the application of scientific concepts in practical situations instead of mathematical calculations in theoretical situations. (Contains 13 references.) (WRM)

Describes a study of the similarities and differences in graph-related interpretations between scientists and college students engaged in collective graph interpretation. Concludes that while many students learned to provide correct answers to scientific graphing questions, they did not come to make linguistic distinctions or increase their…

Describes the development, implementation, and evaluation of a module called "Energy and the Human Being" within the framework of a program aimed at non-science-oriented students in senior high schools in Israel. Finds that students' attitudes toward science were positive and their understanding of the scientific concepts involved was…