Explores the interrelationships between students' general science achievement, scientific epistemological beliefs, and cognitive structure outcomes derived from instruction of basic atomic theory. Contains 19 references. (DDR)

Presents results from a study of the conceptions of chemical reactions held by middle school students, high school students, and general chemistry students at the university level. Results suggest that very few students understand what a chemical reaction is. Contains 19 references. (DDR)

Explains that, in relation to the concept of vision, the cognitive structural model accounts for the normal developmental sequence. Indicates some possible sequences that might help to explain the alternative framework phenomenon. Contains 20 references. (DDR)

Discusses the long running debate on teaching evolution in public schools. Recommends using the 5E teaching cycle of engage, explore, explain, elaborate, and evaluate to show that scientific concepts and theories can be fundamental. (Contains 20 references.) (YDS)

Maintains that language as humans now produce and comprehend evolved from languagelike precursors in the communication systems of nonhuman primates. The article reviews "Gesture and the Nature of Language" (GNL) (1995) and notes that GNL derives syntax incrementally without diluting it to an element not recognizable as a property of language. (37…

Examined three- to four-month-old infants' ability to form perceptually based categorical representation in the domains of natural kinds and artifacts. By showing the availability of perceptually driven basic and superordinate-like representations in early infancy that closely correspond to adult conceptual categories, findings underscored the…

Examined three-year-old children's ability to generalize novel words to new instances. Suggested that children's similarity judgments and feature selection in name generalization are guided by nonstrategic attentional processes that are minimally influenced by new conceptual information. Proposed that these findings may explain the extraordinary…

Examines possibilities for learning offered by a piece of software, Fonctuse, likely to encourage the linking of algebraic and graphical representations of functions. Studied the influence of prior algebraic knowledge on the cognitive processes and constructions of knowledge at play in this environment. (Author/MKR)

Explores whether there are problems with A-level biology that are broadly shared by teachers. Addresses five major areas of concerns: (1) teaching and learning, (2) practical work, (3) subject content, (4) assessment, and (5) initial teacher training. (DDR)

Investigates the effect of mental schemes corresponding to additive and multiplicative situations in the process of interpreting and solving problems. Classifies relative difficulties of problems according to their situations which are considered through a written test administered to pupils in grades 2, 3, and 4. Supports the assumption that…

Presents an exploratory study in which four students from each of grades 4, 6, 8, and 10 were interviewed individually on aspects of variation present in three settings. The first setting was an isolated random sampling situation whereas the other two settings were real world sampling situations. Identifies and describes four levels of responding…

Focuses on students' ability to explain their ideas in writing who were able to demonstrate a high level of scientific concept understanding during discussion. Indicates that scaffolding the writing process both at the sentence level and the text level facilitates an improvement in the expression of scientific knowledge. (Contains 14 references.)…

Focuses on two aspects of the use of concept cartoons in preservice science teacher education: evaluating their use as a teaching and learning approach, and challenging student teachers' perceptions of how constructivist principles might be implemented in the classroom. (SAH)

Identifies ways for children to learn about shapes through hands-on activities. Offers activities specifically for infants, toddlers, preschoolers, and school-age children. (DLH)

Examines current research on brain development, focusing on infants' ability to understand basic numerical concepts and arithmetic operations. Asserts that as the brain undergoes dramatic transformations, it already has a built-in capacity to understand basic numerical concepts. Recommends that parents and professionals engage in activities…