Describes the development of a coding scheme that represents students' ideas and its application to the analysis of interviews with urban students (n=8). Results indicate that decomposition is a linchpin concept for building an understanding of nutrient cycling, and ideas which relate to children's natural framework theories provide a generative…

Investigates students' causal beliefs about the relationship between variables in an electric experiment and the degree to which their tendency to make either idea-based or evidence-based statements depends on a prior belief about the causal efficacy of that variable. Reports that 34% of responses were idea-based despite the presentation of…

Presents ideas for spring flower displays. Has students constructing their own interactive flower displays as extra-credit assignments to reinforce vocabulary and scientific concepts, and modeling flowers with household items. (JRH)

Presents an activity that requires middle level students to use mathematics and measurement skills to estimate the mass of an extinct dinosaur using museum-quality models. (JRH)

The Teacher Enhancement Institute (TEI) on the campus of Saint Vincent College in Latrobe, Pennsylvania involved a diverse group of teachers actively pursuing instructional improvement through workshops in thinking skills, content area, and group seminars. This test was prepared by a team of middle school science and mathematics teachers at the…

In this study, a conceptual change model serves as a theoretical underpinning for analyzing what might count as evidence of conceptual change. Theoretical components of the conceptual change model include the status a conception has for learners, and the conceptual ecology of knowledge within which conceptions are believed to survive and have…

Presents a lesson plan for teaching abstract science concepts to gifted middle school students. The lesson integrates a physical education component into science instruction to reinforce the abstract notion that electrons emit energy in the form of visible light. (CR)

Describes a program designed to educate and train selected teachers to utilize hands-on activities, provide inservice workshops for their colleagues, and function as resource persons within their school districts. Discusses participant selection, workshops, and final project overview and evaluation. Concludes that the stated goals of the project…

Describes an atom-building activity where students construct three-dimensional models of atoms using a styrofoam ball as the nucleus and pom-poms, gum drops, minimarshmallows, or other small items of two different colors to represent protons and neutrons attached. Rings of various sizes with pom-poms attached represent electron shells and…

Students examine the concepts of electrical circuits and switches by building their own alarm systems. Students apply their understanding by creating recorder, window, pressure sensitive, and lunch box alarms. (MDH)

This paper presents research on middle school students working on large science projects in the Knowledge Integration Environment. The objective was to develop an exemplary program of metacognitive prompts to encourage principled knowledge integration by students working on large science projects. The research indicates that metacognitive…

The purpose of the WOWBug project was to promote "Melittobia digitata," a fruit-fly sized wasp, as a new organism for life science instruction and to determine the potential usefulness of the wasp to teach fundamental life science concepts. Fifty-five middle school teachers were introduced to the WOWBug and practiced with prototype…

Describes instruction in an urban sixth-grade classroom in which students are learning about mass, volume, and density by attempting to layer three miscible solutions of differing densities atop one another. Contains 24 references. (DDR)

Argues that science should be taught in a conceptual manner in elementary and middle school, after which (and only after) formulas, concrete strategies, and specific, isolated facts should be taught. Discusses linear versus conceptual learning, how boys and girls learn, how middle school teachers can approach this, preparing new science teachers,…

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…