A concept of major importance in human electrophysiology studies is the process by which activation of an excitable cell results in a rapid rise and fall of the electrical membrane potential, the so-called action potential. Hodgkin and Huxley proposed a model to explain the ionic mechanisms underlying the formation of action potentials. However,…

To view contemporary Science as an industry is a very apt and timely stance. Ghassib's (2010) historical analysis of knowledge production, which he terms "A Productivist Industrial Model of Knowledge Production," is an interesting one. It is important, however, to observe that the outline of this model is based entirely on the production of…

New science standards and reform recommendations spanning grades K--16 focus on a limited set of key scientific concepts from each discipline that all students should know. They also emphasize the integration of these concepts with science practices so that students learn not only the "what" of science but also the "how" and…

For the forty-fourth time, the Association for Educational Communications and Technology (AECT) is sponsoring the publication of these Proceedings. Papers published in this volume were presented online and onsite during the annual AECT Convention. Volume 1 contains papers dealing primarily with research and development topics. Papers dealing with…

Metascientific education of prospective science teachers is seen as a priority in many European countries, in accordance with the central role that contents about the nature of science have achieved in national curricula. In this paper, we present an original theoretical tool, which we have called the matrix of stages and strands that may prove of…

This paper explores the nature and structure of scientific models by taking the position that representations are not models themselves. Representations of models are essential tools for communicating and conversing about the scientific models underlying them. A scientific model is considered to be a set of ideas that describe a natural process. A…

Presents Principles of Biochemistry for use as main focus of a biochemistry course. The nine guiding ideas are the principles of continual turnover, macromolecular organization, molecular recognition, multiplicity of utilization, maximum efficiency, gradual change, interrelationship, transformational reciprocity, and information transfer. In use…

Seeks to identify some of the issues associated with the role of models in scientific explanations. Discusses factors which may influence the way that those explanations are understood and the judgment of their appropriateness by the various audiences involved. Contains 55 references. (DDR)

This paper presents three reasons why teachers should understand and actively use models and model building to frame science. First, science model building and testing is the heart of scientific enterprise, and understanding of the process is crucial for developing scientific literacy. Second, models are a familiar framework through which to…

A general discussion of prediction and the use of models as a means of understanding reality is provided, focusing on the application of mathematical models to various scientific disciplines and its role in experimentation. (DC)

Proposes a mathematical computer model for the behavior of liquids using the classical dynamic principles of Sir Isaac Newton and the molecular dynamics method invented by other scientists. Concludes that other applications will be successful using supercomputers to go beyond simple Newtonian physics. (CW)

Reported is a study designed to determine conceptualizations of scientific concepts, laws and theories (linguistic structure of science) held by 80 Kwara State, Nigeria, secondary school science teachers relative to conceptualizations identified with seven philosophers of science. (Author/DS)

Proposes four formulations of the commonplaces of science based on distinct views of the nature of science, and explores the consequences of each. Argues that although each formulation has strengths, some commonplaces prove more comprehensive than others in capturing the essence of science for the purposes of developing curriculum, educating…

Five types of models are discussed as they relate to their function in the sciences and science teaching. These include scale, analogue, mathematical, theoretical, and archetypal models. (SA)

Presents a model for teaching the principles of evolution. The model presents three major factors that direct changes and affect an individual's fitness. Uses and adaptations of the model are suggested. (Author/SA)