The role of analogies and metaphors has played a significant part in the work on teaching and learning science. This commentary discusses three papers from this current issue that cover a wide range of studies in the spirit of conceptual metaphors--ranging from a study somewhat similar to "classical" conceptual change, to a teacher…

Outlines the elements of a revised epistemological approach to thinking about library and information science. Hermeneutical phenomenology seeks an understanding of the essence of things (such as the library) and takes into account, among other things, the intentional stances of the human actors within the realm of library and information science.…

This paper examines the nature of concepts and conceptual processes and the manner of their formation. It argues that a process of successive abstraction and systematization is central to the evolution of conceptual structures. Classificatory processes are discussed and three levels of abstraction outlined. (Author/SJL)

Proposes a model of mathematics conceptual development consisting of two phases: abstraction and generalization. Illustrates model by references to the development of multiplication and angle concepts. (19 references) (MKR)

This paper argues that if conclusions about children's grasp of logical concepts are to be reached and acceptable lines of research followed, then more precise definitions of the concept "logical necessity" must be formulated. The paper defines logical necessity as "the unconditional guarantee of truth that accompanies valid…

This paper analyzes how philosophy enters into inquiry in teacher education, in writings by both philosophers and nonphilosophers. Examples illustrate philosophical activities (such as conceptual and logical analysis, positing and explaining distinctions, evoking shared ideas and values), as well as showing that philosophy plays an important part…

Discusses critical thinking as the process of moving fluently among abstraction levels. Defines three components involved in fluency of movement: (1) knowledge, or an awareness of the existence of abstraction levels; (2) payoff, or the reason for acquiring fluency; and (3) timing, or a consciousness of abstraction levels at a given time and place.…

Discusses children's use of metaphors to create meaning, using as an example the pragmatic and "scientific" ways in which preschool children explain thunder and lightning to themselves. Argues that children are being shortchanged by modern scientific notions of abstractness and that they should be encouraged to create their own explanations of…

Examines the differences between concrete and abstract concepts and their implications for instructional design and teaching. How specific concepts are stored in and retrieved from memory is described, analogies are discussed as an instructional tool in abstract concept learning, and a possible instructional strategy for teaching abstract concepts…

Even among individuals operating at Piaget's highest cognitive level (Formal Operations Stage) there is a range of behaviors on important cognitive characteristics. Various substages and their performance criteria are suggested. (JD)

The framework for this paper is a recently developed theory of abstraction in context. The paper reports on data collected from one student working on tasks concerned with absolute value functions. It examines the relationship between mathematical constructions and abstractions. It argues that an abstraction is a consolidated construction that can…

Since a discourse community may have its membership assigned both on the basis of speech or of writing, it follows that the concept of discourse community needs to be both medium-neutral and unconstrained by space and time. The defining characteristics of a discourse community might be (1) communality of interest, (2) mechanisms for…

Without opportunities to acquire multiple forms of literacy, children will be handicapped in their ability to participate in the legacies of their culture. The forms in which thinking occurs should not be subjected to the status differences and inequities of society. (MLW)

This paper introduces successive and coordinate intellectual thinking skills, using concepts as a best case example. The attributes and optimal presentation requirements of successive and coordinate concepts are reviewed, and types of errors commonly associated with successive and coordinate skills are delineated. The effects of both of these…

This paper examines the area of teachers' practical arguments (arugments consisting in the search for a plan of action), considering questions such as: How does rationality manifest itself in practice, and in specific human practices like teaching? Is practical reasoning in teaching moral? Do values of theoretical reasoning, such as universality,…