In this paper, we describe students' concept images of average and average rate of change and the similarities and differences between those concept images. We do so by describing the students' ways of thinking and ways of understanding average and average rate of change, and how the students' meanings for average influenced their conceptions of…

The primary purpose of this study was to investigate the effectiveness of two different types of post-instruction concept interviews: one that did and one that did not embed a concept mapping process as means of eliciting students' post-instruction conceptual understandings about the nature of, source of, and problems caused by chlorofluorocarbons…

This paper is based on the belief that knowledge must be organized in order to be accessible from long term memory and this kind of organization requires connected understanding. It reports on the development and validity of the select-and-fill-in concept map format designed to measure middle school students' connected understanding of selected…

This study describes efforts to apply principles of systematic knowledge representation (concept mapping and computer-based semantic networking techniques) to the domain of ecology. A set of 24 relationships and modifiers is presented that seem sufficient for describing all ecological relationships discussed in an introductory course. Many of…

The consistent reports on gender inequity in science achievement have led to a search for more effective strategies for correcting the imbalance. This study is part of a search which sought to investigate whether or not the cooperative-concept mapping technique improves the science achievement of girls. A non-equivalent control group…

A number of strategies, informed by science education research, have been identified to assist the understanding and communication of difficult concepts in science. A teacher's craft lies in creating learning experiences that facilitate concept development and challenge misconceptions from which students actively build, modify, and extend their…

Within high school chemistry the topic of acids, bases, and pH is particularly challenging because robust understanding of the topic depends heavily on the student possessing deep concepts of atoms, molecules, ions, and chemical reactions. Since knowledge is acquired and stored in a dynamic structure, it was investigated in this study how…