This paper argues that operations with negative numbers should be taught using a curriculum that is grounded in algebraic geometry. This position is supported by the results from a study that compared the conceptual understanding of grade 9 students who received the Algebra Project transition curriculum to a control group of grade 6 gifted…

The goals of this research project included noting the importance that primary teachers placed on student ideas in planning and delivering science lessons for the topic of snails, and comparing the importance teachers afforded student ideas-and instruction based on student ideas-with the perception their students had of the importance of their…

This Pilipino teacher's guide is part of Berkeley, California Unified School District Asian American Bilingual Center's effort to foster the total growth of the child. To facilitate that growth, the Center has selected an interdisciplinary approach to curriculum development. Social studies themes and concepts provide the framework within which all…

Issues concerning the language of instruction used in teaching English to native speakers of Chinese, particularly adolescents, are discussed. The discussion draws on research in two areas: the role of language medium in the acquisition of concepts, and psycholinguistic differences between Chinese and English. It is concluded that while the…

This publication was designed as a textbook for early childhood preservice teachers and as a resource for inservice teachers. Structured around the concepts considered key to the social science disciplines--the attitudes, values, and skills believed essential for citizens of a democratic society--it presents a multitude of ideas for introducing…

At the same time that educators and researchers are identifying ways in which major reform and restructuring is needed in schools, research on student learning in science (and other subjects) from constructivist and conceptual-change perspectives is suggesting the potential for significant improvements in students' understanding of science and…

The constructs of concrete and formal operational reasoning were examined in 459 15-year-old secondary school students (234 males and 225 females) in Singapore. Log linear models were used to explore the relationships between Piagetian level of reasoning, the level of intelligence, gender, and type of home-speaking environment among these…

Developmental changes in the understanding and use of the logic of experimental control were addressed with three tasks in a longitudinal study. In all three tasks, understanding of experimental control was assessed by production measures (children were asked to test potential causal relations in a multivariable situation) and by choice/evaluation…

The purpose of this paper is to update the review of science-related reading research conducted by Yore and Shymansky (1985) and to provide a current research foundation for a science reading research agenda. This review emphasizes the post-1985 literature and selected pre-1985 literature not included in the earlier summary. This summary addresses…

Project META (Metacognitive Enhancing Teaching Activities) is a 3-year naturalistic case study designed to explicitly enhance the metacognitive capabilities of learners in order to illuminate the nature of metacognitive interactions among elementary students and to describe the impact this type of enhancement has on the formation of students'…

A quantitative synthesis of multivariate studies in science education during the past ten years yields evidence to support a model of achievement in science very much like that currently proposed in the literature of expert problem-solving. Despite previous claims, spatial visualization and verbal ability predict additional variance in achievement…

The purpose of this descriptive study was to create and test questions on stoichiometry with number ratios for quick mental calculations and to identify students' problem-solving strategies. The present study was a component of a more comprehensive investigation in which 7,441 German senior high school students were asked to work on 154 test items…

The assertion that there is a social component to children's construction of knowledge about natural phenomena is supported by evidence from an examination of children's classification schemes for plants. An ethnographic study was conducted with nine sixth grade children in central Texas. The children classified plants in the outdoors, in a…

The program and abstracts of the presentations of the 1991 meeting of the Society for College Science Teachers are the topics of this report. Society officers are listed, a history of the society is provided, and membership information is given. The presentations reflect different topics in the teaching of college science. The abstracts of…

This paper reports on the evaluation of an 11-week curriculum created to foster seventh grade students' understanding of scientific modeling. In the curriculum, students engaged in model-oriented activities such as creating non-Newtonian computer microworlds to embody their conceptual models, evaluating their models with criteria, and reflecting…