This article provides an extended, comprehensive example of how teachers, schools, districts, and external factors (e.g., parental pressure and policy mandates) shape curriculum research in the U.S. It retrospectively examines how three different middle school curriculum units were implemented and scaled-up in a large, diverse school system. The…

Explores the effects of teaching particulate representation of chemistry on the achievement of high school students in terms of gender interaction. Indicates that females who were taught the particulate representation scored as well as males whereas those who were not taught the particulate representation scored significantly lower than males.…

Investigates secondary school students' concepts of isotopes and allotropes and how the concepts are linked to the Periodic Table of Elements (PTE). Questions senior high school students with multiple choice items and interviews. Shows that students actively tried to make sense of what they had experienced. (KHR)

Investigates how situational knowledge differs across individuals of different competence levels. Analyzes participants' descriptions of physics problem situations. Discusses the relationship between competence and the structure of problem situations, differences between experts and novices, and implications for teaching. (Author/KHR)

Analyzes the participation of secondary school teachers in a U.S. science education curriculum reform effort. Discusses perspectives for the behavior of these teachers relying on knowledge base, practical reasoning and reflective practice, sociocultural views, and a view of teaching as a way of being and teachers as meaning makers. Analyzes two…

Reports the teaching behaviors of instructors who (1) willfully and (2) under mandate adopted a new earth science syllabus. After a four year time span had elapsed, both groups exhibited similar behaviors. (CP)

Discussed is the influence of the nature of the environment on the culture of a people and students' concept attainment in science. The influence of the home environment, reasoning abilities, and preference in type of learning are included in the discussion. (KR)

The research reported in this article focuses on teachers' views of participating in curriculum development at the local level. A questionnaire returned by the randomly selected teachers provided data on the types of help desired by teachers involved in curriculum development, sources of help, and curriculum development activities. (SA)

Characterizes students' understanding of the rock cycle system. Examines effects of a knowledge integration activity on their system thinking. Interprets answers to an open-ended test using a systems thinking continuum ranging from a completely static view of the system to an understanding of the system's cyclic nature. Reports meaningful…

Science curriculum evaluation studies (1963-1978) were examined to assess impact of innovative curricula compared with traditional curricula on student learning outcomes. Results suggest students in secondary school science courses scored moderately better than students in traditional courses on innovative and neutral tests and negligibly lower on…

Explores how educational experience organized around students' use of a world wide web (WWW)-controllable atomic force microscope (AFM) influenced student understanding of viruses. Conducts a unit on viruses for two high school biology classes, which incorporated the use of WWW-controllable AFM. Suggests that the use of this technology as a tool…

Investigates the opinions of 991 Israeli junior high school students with regard to their choices and preferences of science subjects. Findings show that preferred subjects were chosen both from school curricula and from having agents outside the school. (HM)

Inquires into the influence of subject communities on the practice of secondary school teachers as they teach a new science and technology course that crosses traditional subject and department boundaries. Contains 20 references. (DDR)

A conceptual model, which provides insight into the individual concerns that teachers adopting a new program may express, was employed in a study of science teachers (N=139) adopting the Intermediate Science Curriculum Study (ISCS). Results from a 35-item instrument (Stages of Concern Questionnaire), demographic data, and recommendations are…