Children in grades two and five explained such weather phenomena as wind, clouds, thunder, lightning, rain, snow, and rainbows during interviews. Results indicate that most students in both grades were at a stage of nonreligious finalism and do not use true causality in explanations. Implications for teaching are discussed. (DH)

Reviews the formation of space, time, and measurement concepts in children with respect to Piagetian developmental levels and presents some teaching methods to help promote these concepts. (SK)

Describes a study of a range of challenging activities centered on evaporation and condensation done with elementary school children. Analyzes children's explanations in light of the existing literature. Finds that older children display a surer sense of ontological categories, greater epistemological sophistication, greater precision in language…

Describes children's conceptions of the structure and function of the human digestive system based on an investigation carried out with children aged 4-10 (n=45). Finds that children possess biological knowledge as an independent knowledge domain from the age of four. Discusses acquisition of and barriers to scientific concepts related to human…

This investigation of the development of young children's concept of evaporation examines their intuitive explanations of real world events involving evaporation. A study of the effects of providing evidence contradicting their explanations and of directing their attention to relevant situational features provides insight into the development of…

The results of a study conducted with elementary school students in Tanzania are presented. A number of alternative conceptions were revealed. The role of sociocultural beliefs in forming these conceptions is described, and the implications of these findings for science teaching and teacher education are discussed. (Author/CW)

Presented is an experiment investigating children's awareness of regularities in physical phenomena and their capacity for expressing these regularities. Hypothesized and confirmed is that children can use statements with the form and purpose of a physical law. Cartoons related to Archimedes' principle (and connected gravitation and fluid…

This exploratory study was aimed at uncovering children's beliefs and ideas about the human circulatory system. Thirty-two subjects, aged 7 to 14 years, were interviewed using a modification of Piaget's clinical method. The data were analyzed by developing a conceptual inventory of beliefs for each of five research questions. It was found that the…

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.…

This report presents the results of an investigation of the Science Curriculum Improvement Study (SCIS) program and the effects of the Materials Objects unit on first-grade students and teachers. The contents of the report include purposes and limitations of the study, discussion of the instruments, observers, reliability of the Q sort, the…

Traces change in conception of gravity in a boy from kindergarten until second grade, focusing on the process by which persons restructure ideas that differ from accepted scientific understandings, and acquire scientific ideas. Provides criteria for defining an alternative conception; suggests how conditions in the initial interview may have…

Describes the procedures and techniques employed in a peer-group approach for promoting conceptual change. Explains how a series of cards were used to challenge student's conceptions of energy. Suggests that a systematic development of skills is needed to maximize the benefits of a peer group discussion approach. (ML)

Relationships which exist between self-perception in science and cognitive development were explored under two quantitatively different teaching strategies: the use or nonuse of directions, praise, and rejection. A less directive teaching strategy appears to provide a more positive environment for developing an independent self-perception in…

Conceptual change teaching is an instructional method that helps students modify, extend, or exchange their alternative conceptions for the appropriate scientific conceptions. Provides activities and a diagnostic test to apply the method to the concepts of heat and temperature. (MDH)

This guide is designed to help elementary classroom teachers develop the knowledge and skills necessary to bring process skills to the classroom. The text is presented in two parts. The first part covers the basic science skills which are intended for grades K-3. The basic skills are observing, inferring, measuring, communicating, classifying and…