Explored the degree to which a sample of Tanzania science teachers were able to interpret the local production of alcohol in light of their conceptual knowledge of the science involved, designed experiments for investigating factors relating to the processes of fermentation and distillation, and considered alternatives for improving this…

This essay considers the question of why we should teach science to K-2. After initial consideration of two traditional reasons for studying science, six assertions supporting the idea that even small children should be exposed to science are given. These are, in order: (1) Children naturally enjoy observing and thinking about nature. (2) Exposing…

This study reports findings from a 10-day professional development institute on curricular trends involving 19 secondary mathematics and science teachers and administrators from Japan, Malaysia, Indonesia, Thailand, Korea, Philippines, the United States, and People's Republic of China. Participants explored the roles of culture, place, and…

Argues that children develop knowledge in layers, increasing those layers each time the topic is covered. Reviews three sets of materials that provide a background of experience, vocabulary, and text structure for use in science instruction. (FL)

This report describes the role of analogies in science instruction and presents research on a model for teaching with analogies. This model is being developed from research studies of textbooks and exemplary teachers; it provides guidelines for the strategic use of analogies during science instruction to explain fundamentally important concepts in…

Describes an approach to science instruction that motivates students by tapping into their prior knowledge and by employing specific questioning techniques. Provides information on matching the questioning technique to the instructional goal. (DDR)

Argues that the traditional paradigm used in teaching science and mathematics should be replaced by one which focuses on the students' own conceptions, prior experiences, and active participation in learning. (DDR)

Analyzes junior high school students' astronomy conceptions by means of a written questionnaire and delineates the main findings. Focuses on the effect on climate of the relative positions of the earth, moon and sun. (Contains 41 references.) (DDR)

Underpinning science education reform movements in the last 20 years--at all levels and within all disciplines--is an explicit shift in the goals of science teaching from students simply creating a knowledge base of scientific facts to students developing deeper understandings of major concepts within a scientific discipline. For example, what use…

The purpose of this study was to explore the effects of conceptual change texts oriented instruction on 9th grade students' understanding of chemical bonding concepts. In this study, the main aim of the preparation of conceptual change texts was to activate students' prior knowledge and misconceptions and to help them to understand the chemical…

This paper discusses various aspects of conceptual change instruction and research related to conceptual change strategies. The role played by teachers in the conceptual change process has been neglected in the research and understanding that role requires that: (1) the Conceptual Change Model of Posner provide a reasonable framework for thinking…

A study examined the role of prior knowledge in teacher-generated analogies and student-generated analogies that convey the concept of protein synthesis. Subjects were 269 eighth-grade students enrolled in a public school district in a northern suburb of Chicago, Illinois. Subjects were divided into groups that received traditional instruction,…

Results of a study involving 55 developmental studies college students indicate that regardless of reading competency levels, prior knowledge activation plus advance warning of possible inconsistencies in the text apparently facilitate students' comprehension of counterintuitive science text better than activation alone. (IAH)

Examines reader and text variables related to conceptual change learning from science textbooks. Shows it is difficult to change readers' prior knowledge by reading texts that are inconsistent with that knowledge, but refutation text was shown to impact students' prior knowledge when that knowledge contained naive scientific conceptions. Addresses…

Describes trends in students' explanations of biological change in organisms. Student responses to questions on how graphically depicted phenomena occur were analyzed and most students were unable to offer causal explanations. (Contains 27 references.) (DDR)