Although instruction on meiosis is repeated many times during the undergraduate curriculum, many students show poor comprehension even as upper-level biology majors. We propose that the difficulty lies in the complexity of understanding DNA, which we explain through a new model, the DNA triangle. The "DNA triangle" integrates three…

This book meets a demand in the science education community for a comprehensive and introductory measurement book in science education. It describes measurement instruments reported in refereed science education research journals, and introduces the Rasch modeling approach to developing measurement instruments in common science assessment domains,…

Researchers and practitioners alike express concerns about the conceptual difficulties associated with the concepts of momentum and kinetic energy currently taught in school physics. This article presents an in-depth analysis of the treatment given to them in 44 published textbooks written for UK secondary school certificate courses. This is set…

The chapters in this book reflect the work of science and mathematics educators who have worked for many years at the international level. As members of the International Consortium for Research in Science and Mathematics Education, their work provides readers with issues, models, practices, and research results that have applicability and…

Explored are the following dimensions of scientific literacy: the ethos of modern science and the cumulative achievements of science and technology in the history of the United States and in the nature of contemporary society. Also discussed is the reform movement in science education. (KR)

Presented is a demonstration in which students are shown an objective view of the role of animals through the analysis of books about ecosystems. The book analysis method and lists of books about wetlands and terrestrial ecosystems are included. (CW)

Examines ways in which description and explanation are used in science teaching, including word usage and the role of activities. Considers the desirable characteristics of explanation for teaching purposes. Raises major questions about explanation in science education. Shows the need to make a clear distinction between description and…

The diversity of the educational system of the United States that engenders a wealth of innovative ideas and varied practices also makes it an extremely complex system to confront and understand as a whole. This survey was undertaken to develop current baseline data on all secondary school teachers of physics in the United States, including those…

The purpose of this study was to identify alternative life and physical science concepts possessed by preservice elementary science teachers (n=49). Science textbooks used in grades 5 and 6 were surveyed and a literature review of alternative life and physical science concepts was conducted. Results of the survey and literature review resulted in…

This summary of research in science education for 1989 is organized around 15 major themes. These themes are: (1) criteria and ethics; (2) achievement in science; (3) affect; (4) classroom interactions; (5) cognitive processes; (6) computers; (7) curriculum; (8) instruction; (9) legislation and policy; (10) misconceptions; (11) scientific…

Discusses teacher knowledge of nature of science. Asserts this is aspect of science content knowledge frequently neglected in teacher education. Differentiates between positivism and postpositivism. Describes textbook's role in fostering student misconceptions of nature of science. Suggests students be given chance to carry out their own…

This paper describes the development of a sixth-grade "Matter and Molecules" unit using a new curriculum development model based on conceptual change research, the field testing of this unit in 15 classrooms and the field test results. The development process and the resulting unit are contrasted with the unit's predecessor, the "Models of Matter"…

Described is a study of 147 students that indicated a high proportion of students did not understand the concept of limiting factors. Textbook presentations that create problems are discussed. Strategies which may be more effective in teaching the concept are suggested. (CW)

The first (exploratory) phase of the Learning in Science Project focused on science teaching/learning in the Form 1 to 4 level (ages 10 to 14) and sought to identify problems and difficulties in several areas. Provided in this paper are comments obtained during structured/unstructured interviews (from students, ex-students, teachers, headmasters,…

In the past, science textbooks have been the target of criticism by educators and feminists in studies of sex bias in education. The purpose of this study was to develop a useful tool that could be used in formative or summative evaluation of the level of sexism in science textbooks and as a research tool to study the effect of sexist…