Presents a mathematical problem that, when examined and generalized, develops the relationships between power and efficiency in energy transfer. Offers four examples of simple electrical and mechanical systems to illustrate the principle that maximum power occurs at 50 percent efficiency. (MDH)

Article offers some adaptations the authors used to help integrate special education students in regular classrooms. Authors believe that productivity is achieved by having the special education teacher work directly with the classroom teacher in a two-teacher partnership situation. Provides lists of strategies to help special education students…

Investigates influences of educational set and cognitive preference of the student as independent variables on knowledge and cognitive organization outcomes in the context of other educationally significant variables. Concludes cognitive preference is an important variable contributing uniquely to achievement and cognitive organization in the…

Presents a first day physics activity having students determine the fine for a speeding ticket if the speeds considered include the earth's rotation and revolution speed, and the movement through the galaxy. (MDH)

Clarifies the idea of prediction in science teaching by distinguishing between the two extremes of guessing and making logical deductions. Discusses the use of predictions in testing teachers' and students' explanations. (MDH)

This study reports on a survey in Minnesota designed to provide a picture of the instructional styles that are used by seventh- and eighth-grade science teachers (n=139). Although relationships exist, it appears that seventh- and eighth-grade teachers are individualistic and diverse in their reported teaching technique preferences. (PR)

Responses of 322 university sophomores (education majors) on an evolution problem "How could the bat have evolved wings?" are analyzed and classified. Concludes that misunderstandings are logical. (PR)

This article describes the genesis and development of concept mapping as a tool for science education. It also offers an overview of this special issue of the "Journal of Research in Science Teaching" and comments on the current state of knowledge representation. Suggestions for further research are made. (49 references) (Author/PR)

Describes how three biology textbooks present content related to photosynthesis through construct of elaboration. Concept maps were created for each textbook. Results are discussed in terms of quantity of elaboration, relevance of ideas used to elaborate major concepts, relationship of nature of elaboration to intended readers, and general…

Discusses the historical development and present status of a current educational trend in science education, Science-Technology-Society (STS). Presents the origins of the trend, a comparison of STS science classes to traditional classes, and general results of studies contrasting STS with traditional teaching. (35 references) (MDH)

Linguistic content analysis, method of encoding textual data by categorizing key words and identifying relationships, was developed to assess degree to which science was portrayed as process of inquiry within high school biology textbook series. The frequency of science as a process of inquiry increased from 1956 to 1965, then showed a pattern of…

Interviews were conducted with grade 10 students (n=34) who had received 4 years of physics instruction. Interview's focus was to understand students' responses from their point of view. The results of the study confirm and deepen findings from other studies concerning students' severe difficulties in learning the energy concept, the particle…

The purpose of this study involving 12 classrooms was twofold: (1) to understand the conceptual frameworks that sixth-grade students use to explain the nature of matter and molecules, and (2) to assess the effectiveness of 2 alternative curriculum units in promoting students' scientific understanding. Results reveal that students' entering…

Beginning physics students (n=42) were constrained to analyze mechanics problems according to a hierarchical scheme that integrated concepts, principles, and procedures. After five one-hour sessions, students increased their reliance on the use of principles in categorizing problems according to similarity of solution and in writing qualitative…

Presents a cooperative activity between home and school in which parents and students examine the growth of a variety of bulbs. Bulbs are taken home to sprout and returned to school to monitor their growth. Students gather data, hone observation and graphing skills, and communicate with their parents on the project. (MDH)