Discussed are the results of interviews with 63 Australian children (interviewed in English) and 62 Nigerian children (62 interviewed in English and 60 interviewed in Yoruba) to determine how they used number concepts in discussing five demonstrations manipulating physical matter. Differences between the two groups are considered. (RH)

A model for learning mathematics is proposed which involves the components of using, discriminating, generalizing, and synthesizing. The ways pupils use Logo programs as tools within their projects and how the nature of their programming tools become more explicitly understood and generalized are discussed. (RH)

Evaluation of "Concept Diagrams" and a related "Concept Teaching Routine" used in nine secondary school classrooms which included 32 learning-disabled (LD) students, found that teachers successfully selected target concepts and implemented the teaching routine, whereas students (both LD and non-LD) demonstrated gains in concept acquisition,…

Sixteen concept words related to "matter" were described as simple textbook definitions and 16 multiple-choice items were constructed for each concept definition. These materials were used to compare the ability of 1,635 Tasmanian and 826 Indian students to recognize the concept definitions and their attendant verbal labels. (JN)

Reviews a study which examined high school biology students' (N=58) understandings of the concepts of food chain and ecosystem. Discusses the evaluation scheme and relates how this approach can be used in classifying student responses. It was found that most of the students failed to understand the targeted concepts. (ML)

How the notion of limit can be developed through a meaningful approach is discussed. Selected portions of the high school calculus course are described, and errors on a test are analyzed. (MNS)

The relationship between the historical evolution of algebraic ideas and their conceptual development is examined. A study with secondary school students indicates a possible parallelism between algebraic evolution and conceptual development and indicates how historical analysis can guide teaching. (MNS)

The need to develop measurement concepts in addition to measurement skills is discussed, with specific activities suggested. (MNS)

This article offers a critique of Thiessen's "Indoctrination and Religious Education."

Joseph and Judith Davenport discuss the controversy surrounding the concept of andragogy: differing philosophical orientations, classification of andragogy, and general utility or value of the term for adult education. George Yonge examines the inappropriateness of the focus on teaching and learning and critical differences between andragogy and…

Two studies involving learning disabled elementary students examined two procedures shown to facilitate concept acquisition among normal children: selection and sequence of positive and negative examples and analytic assistance during concept learning. Examples did not facilitate concept acquisition, and exposure to a simple strategy actually…

In three experiments, a multiple habituation paradigm was used to examine the ability of 7- and 9-month-old prelinguistic infants to form a natural, basic-level object category. Findings constitute independent evidence for the existence of a linguistically relevant nonlinguistic category prior to the onset of word comprehension. (SED)

Examines developmental change in 4- 7- and 10-month-old infants' perceptions of correlations among attributes to determine whether relational information plays a role in abilities ranging from the perception and recognition of a simple pattern to the formation of a category. (HOD)

Activity theory posits that culturally organized actions guide the acquisition and organization of knowledge. This theory was applied to the organization of knowledge within a large milk processing plant. The dairy was found to be organized by social knowledge, yet individuals creatively synthesized several domains of knowledge to organize their…

Describes a study which used a discrimination-learning procedure to compare the ability of language-disordered and normal children to modify hypotheses. In a series of two-dimensional learning set and orthogonal problems, all children reached learning set criteria quickly; on orthogonal problems, language-disordered children performed…