The following article presents a proposal for the redesign of a traditional course in Differential Equations at Middle Georgia College. The redesign of the course involves a new approach to teaching traditional concepts: one where the understanding of the physical aspects of each problem takes precedence over the actual mechanics of solving the…

Introduction: This research addresses preschoolers' intuitive understanding of rectilinear movement and some variables which affect it, and the type of arguments used when related knowledge states are justified. A first working hypothesis is that the resolution of practical, functional situations would be based on self-regulation processes. A…

The introduction of the Force Concept Inventory (FCI) by David Hestenes and colleagues in 1992 produced a remarkable impact within the community of physics teachers. An instrument to measure student comprehension of the Newtonian concept of force, the FCI demonstrates that active learning leads to far superior student conceptual learning than…

In the literature, learners' cognitive development is mainly discussed with respect to changes in learners' content-dependent knowledge (conceptual change or growth). Additional dimensions of time and complexity may also be taken into account to describe cognitive processes in at least three dimensions. We discuss these three dimensions of…

The current paradigm in science education calls for greater emphasis on guiding students in active and extended scientific inquiry. This is supported by research suggesting that using a hands-on approach to learning fosters ownership in the learning process and allows students to gain greater appreciation for the design and implementation of…

This article describes an exploratory case study of secondary school physics teachers' conceptions of scientific evidence. The nature of teachers' conceptions of evidence was derived from an analysis of data collected from 1 preservice and 2 in-service teachers. Each teacher responded to a series of research prompts in multiple interviews and…

This paper describes an attempt at evaluating a potentially critical "detail" of teaching practice; that is, using a particular diagram to illustrate the imaging role of a converging lens. This "basic" diagram has been designed to contribute to help students overcome the well-known "travelling image" syndrome. We conducted a comparative study with…

College students often experience difficulties in solving physics problems. These difficulties largely result from a lack of conceptual understanding of the topic. The processes of conceptual learning reflect the nature of the causal reasoning process. Two major causal reasoning methods are the covariational and the mechanism-based approaches.…

This paper presents findings of a project aimed to improve the quality of science education in Southeast Mexico by the creation of a community of practice among scientists, researchers and teachers, involved in the design, implementation and evaluation of a professional development program for mathematics, chemistry, biology and physics secondary…

This study investigated the kinds of dialogic behavior engaged in by students while studying a difficult physics course at the Open University, UK. Research objectives were twofold: (1) to document what dialogue types, mediated through which resources, were utilized by students to overcome conceptual difficulties that emerged while reading the…

Gender differences in science interests were examined in two studies of projects entered in a regional science fair in kindergarten through grade 12. A content analysis of 1,319 project topics and materials submitted to the Northeastern Indiana Regional Science and Engineering Fair from 1991 through 1993 showed that girls were more likely than…

Popular belief in alternative assessment procedures suggests that the use of student portfolios can help learners successfully organize and integrate newly acquired scientific knowledge. This two-group comparison study documents the use of student created portfolios in an algebra-based, college-level, introductory physics course. Sixteen students…

This book highlights the importance of science and technology education in Australia in the post-compulsory years. It outlines the themes of how and why science and technology are now being so regularly associated in reports and reviews of education and training and contains an account of the changes in the societal and educational contexts that…

In this study, learners worked with a simulation of harmonic oscillation. Two supportive measures were introduced: model progression and assignments. In model progression, the model underlying the simulation is not offered in its full complexity from the start, but variables are gradually introduced. Assignments are small exercises that help the…

This series of educational activities is intended to help teachers communicate basic scientific concepts related to global warming and the greenhouse effect to students grades 7-10. Seven sessions provide laboratory activities, simulations, and discussions that can be used to improve student understanding of a number of important scientific…