Focuses on the conceptual understanding held by (n=78) preservice elementary teachers about moon phases before and after instruction. Compares instructive effect between two groups--inquiry-based physics instruction and no instruction. Reports that without the instruction, most preservice teachers were likely to hold alternative conceptions of the…

Elementary school children were interviewed about how gears move on a gearboard and how they work in commonplace machines. Children's reasoning became more general, formal, and mathematical as problem complexity increased, suggesting that mathematical forms of reason may develop when they provide a clear advantage over simple causal…

This article reports on a study that was designed to describe prospective elementary teachers' prior verbal and diagrammatic knowledge about various aspects of light, seeing, shadows, and mirror images. Data were collected through individual interviews using simple apparatus. Included are some inferences about how students' ideas may have emerged…

Examines third-grade students' ideas on the lunar phases prior to, and following, an instructional period designed to promote students' conceptual change. Demonstrates that students are capable of making conceptual changes. Contains 30 references. (DDR)

Involves 321 preservice elementary teacher education students in a study designed to investigate their intuitive scientific ideas and understandings. Results reveal that the majority of subjects, with the exception of a high proportion of those who has a successful high school background in physics and chemistry, have misunderstandings regarding…

Reports on a study in which clinical interviews were conducted with three elementary school children to determine the extent to which they held naive misconceptions about important biological topics, and to determine agewise trends in the development of biological knowledge. (TW)

The ways in which the concept of acceleration is treated in physics textbooks is compared with understandings of the concept demonstrated by final-year secondary (n=30) and first-year university students (n=60). Some students' understanding are shown to be incomplete in ways that parallel misleading or inaccurate textbook treatment of the concept.…

This study (n=192) examined the use of analogical instruction to overcome misconceptions about conservation of matter. Students who understood the concept conservation of matter when iodine was evaporated were able to transfer their understanding to the evaporation of acetone. This indicates that teaching by analogy can be an effective tool in…

Examines changes in the science content representations of two prospective elementary teachers during their first year in an experimental teacher preparation program. Finds that opportunities to engage in cycles of instruction guided by structured considerations for content representation contributed to improvements in the teachers' science…

The question of how children solve force and motion problems in computer simulations without explicit knowledge of the underlying physics was investigated. Keystroke sequences made by children were saved and analyzed, and children were interviewed to understand their perception of the relationship between keyboard input and on-screen action. (CW)

Discusses the influence of a reflective, explicit, activity-based approach to nature of science (NOS) instruction used in an elementary science methods course on preservice teachers' views of some aspects of the nature of science. Finds that participants made substantial gains in their views of some of the target NOS aspects. Advocates a…

Reports on an investigation of young children's (n=15) spontaneously constructed or naive understanding of the particulate nature of matter to any formal instruction in the domain. Speculates that children first develop local frameworks particular to different classes of substances, then slowly expand those frameworks to include a wide range of…

Examined the extent to which students' alternative conceptions changed as a function of age. Reports that many alternative views remain intact throughout the school years. Provides several suggestions for teaching and research within the context of a neoconstructivist view of learning. (Author/YP)