In this study, 364 first-year physics students were randomly assigned to one of four online multimedia treatments on Newton's First and Second Laws of Motion: (1) the "Exposition", a concise lecture-style presentation; (2) the "Extended Exposition", the Exposition with additional interesting information; (3) the "Refutation", the Exposition with…

The theory of conceptual change is criticized because it focuses only on supposed underlying logical structures and rational process processes, and lacks attention to affective aspects as well as motivational constructs in students' learning science. This is a vast underestimation of the complexity and diversity of one's change of conceptions. The…

This paper reports case study research into the knowledge and understanding of chemistry for six secondary science student teachers. It combines innovative student-generated computer animations, using "ChemSense" software, with interviews to probe understanding of four common chemical processes used in the secondary school curriculum. Findings…

The authors teach upper-level science courses in cell biology, genetics, and biochemistry at a public, four-year "community university" that serves a demographically diverse population of traditional and nontraditional students. In this article, they describe some of the issues they have found to be particularly significant at their "community…

Results are reported from a study which showed that activating competent readers' naive conceptions about a complex science concept is not as effective in dispelling inaccurate information as activating their naive conceptions and then explicitly directing them to read and attend to ideas that might differ from their own. (IAH)

This article profiles a high school physics teacher who received a grant to conduct research, with his own classes, designed to identify students' preconceptions about the physical world, explore ways teachers can use those preconceptions to teach physical laws, and prepare classroom materials that teachers can use to teach physics. (IAH)

This article examines how the Dual-Situated Learning Model (DSLM) facilitates a radical change of concepts that involve the understanding of matter, process, and hierarchical attributes. The DSLM requires knowledge of students' prior beliefs of science concepts and the nature of these concepts. In addition, DSLM also serves two functions: it…

Examines how readers overcome their misconceptions about the principles of motion. Finds that students overcome misconceptions when their prior knowledge is activated, regardless of whether they read text that supports or refutes those misconceptions. Finds that students using several processing strategies have an advantage over students using…

Visual representations are essential for communicating ideas in the science classroom; however, the design of such representations is not always beneficial for learners. This paper presents instructional design considerations providing empirical evidence and integrating theoretical concepts related to cognitive load. Learners have a limited…

Sixty-two high-school biology students, paired heterogeneously based on prior knowledge, learned about genetic using GenScope, a computer-based learning environment (CBLE), over four 90-minute class periods. Differences between low and high prior knowledge students emerged with convergence of verbal process data and pre- and post-test product…

Instructors used an electronic response system to enhance student-centered learning in large and small college biology classes. The system worked well to engage students in learning the subject matter and to assess their prior knowledge and misconceptions. It provided useful feedback to students as well as instructors. Problems encountered…

This paper sets out to identify some key problems, issues and challenges relating to out-of-school experiences of learners in science teaching that emerged during classroom observations in schools in Botswana. Generally, there is evidence suggesting weak incorporation of learners' experiences into teaching. The experiences seemed to have a lower…

In an era of continuing developments in science and technology, teachers are faced with an increasingly challenging task of helping K-12 students become and remain scientifically literate. Effective science instruction involves activation of prior knowledge, hands-on learning, and continuous reflection. Technology has the potential to play a…

This study investigated the effectiveness of different types of feedback content (elaborate versus global) and feedback timing (immediate versus delayed) for learning genetics in a web-based learning environment as a function of learners' prior knowledge. It was hypothesized that learning outcomes of students with low prior knowledge would be…

The purpose of this research was to examine the effects of implementation of argumentation in a physics classroom on students' reasoning. This research is both quantitative and qualitative in nature. Experimental design was used for the study. For the quantitative aspect of the research, students' prior knowledge in the beginning of the…