Uses manipulative materials to build and examine geometric models that simulate the self-similarity properties of fractals. Examples are discussed in two dimensions, three dimensions, and the fractal dimension. Discusses how models can be misleading. (Contains 10 references.) (MDH)

Presents the problem of finding the maximum area of a quadrilateral when three of the four sides are given. Incorporates several parts of the secondary school precalculus curriculum into the solution. Develops the formula to solve the problem. (MDH)

This study investigates the way collaborative learning that occurs primarily outside the classroom affects college students' understanding of science. Collaborative learning is particularly important for the increasing number of nontraditional students who have limited time available for study groups and other peer learning activities occurring…

Mentoring programs for youth have grown tremendously in popularity in recent years and in many important respects reflect core principles of community psychology. Mentoring of youth is a complex phenomenon, however, with a range of significant processes occurring at the levels of individual youth and their mentors, youth-mentor relationships and…

The purpose of this qualitative case study was to examine the nature of a first-year elementary teacher's specialized practices and knowledge for giving priority to evidence in science teaching and to explore the possible sources from which this knowledge was generated. Data included three audiotaped interviews, six videotaped classroom…

Investigations with the computer can have different functions in the mathematical learning process, such as to let students explore a subject domain, to guide the process of reinvention, or to give them the opportunity to apply what they have learned. Which function has most effect on mathematical level raising? We investigated that question in…

Although the participation of administrators in problem-solving consultation teams is frequently mentioned in the literature as an important factor in the effectiveness of those teams, there has been little research into the impact of administrators on such teams. The impact of administrator participation on problem-solving consultation teams…

Men tend to achieve higher response accuracy than women on surveys of political knowledge. We investigated the possibility that this performance gap is moderated by factors that render the communicative context of a survey intellectually threatening to women and thereby induce stereotype threat. In a telephone survey of college students' political…

Auditory pattern recognition skills in children with reading disorders were investigated using perceptual tests involving discrimination of frequency and duration tonal patterns. A behavioral test battery involving recognition of the pattern of presentation of tone triads was used in which individual components differed in either frequency or…

The attentional blink refers to the finding that the 2nd of 2 targets embedded in a stream of rapidly presented distractors is often missed. Whereas most theories of the attentional blink focus on limited-capacity processes that occur after target selection, the present work investigates the selection process itself. Identifying a target letter…

This article provides a review of various psychotropic agents employed for children and adolescents with externalizing disorders. With the exception of the stimulants, clinical use of psychotropic medications for children with externalizing disorders far exceeds the available empirical literature. Further, there are insufficient data pertaining to…

Computer-aided modelling and investigations can bring the real world into classrooms and facilitate its exploration, in contrast to acquiring factual knowledge from textbooks. Computer modelling puts a whole new "spin" on science education, redefining and reshaping the classroom learning experience. The authors used information and…

As part of the training of students aiming to be primary science education specialists, Goldsmiths College, London, devised a plan to involve nine schools in a special project: a science investigation challenge. A teacher from each school would be trained to lead their pupils through the steps in developing a complete investigation for a…

Considerable research illuminates the development of causal understanding. However, the research base is hardly a coherent whole. Some is based in research on children's understanding of particular science concepts. Some grows out of social psychology and considers how one attributes intentions and behaviors. Some comes from the developmental…

The core idea that we argued for in the target article was that grammatical processing in a second language (L2) is fundamentally different from grammatical processing in one's native (first) language (L1). Our major source of evidence for this claim comes from experimental psycholinguistic studies investigating morphological and syntactic…