Examines the process of students' conceptual changes with regard to air pressure and buoyancy as a result of teaching with the dual situated learning model. Uses a model designed according to the students' ontological viewpoint on science concepts as well as the nature of these concepts. (Contains 40 references.) (Author/YDS)

Presents an interview-based study of (n=56) elementary school students. Determines students' understanding about insect characteristics, life cycles, environmental conditions, and impact on humans. Suggests building units of instruction based on students' personal questions about insects. (Contains 16 references.) (Author/YDS)

Manufacturers' attempts to boost operating productivity rarely pay off and some do more harm than good. A study of a Belgian manufacturer illustrates characteristics that enhance productivity improvement: (1) production of process knowledge that is well understood and relevant and (2) transfer by combining conceptual and operational knowledge.…

Reports on an investigation of students' understanding of the concept of time in special relativity. Discusses a series of research tasks to illustrate how student reasoning of fundamental concepts of relativity was probed. Indicates that after standard instruction, students have serious difficulties with the relativity of simultaneity and the…

This review summarizes some of the work of pioneers in the rehabilitation psychology field and notes that most of their contributions were derived from case studies. Proposes that knowledge in rehabilitation psychology can be organized conceptually along a continuum of research methods and that the case study approach should be restored to a place…

Provides an alternative to traditional instruction in multiplication and division to develop computational fluency in students. (Author/NB)

Discusses the importance of developing teachers' computational fluency so that they can effectively support their students' fluency work. Provides suggestions for helping teachers develop computational fluency with subtraction. (Author/NB)

Presents responses to the Fair Share Problem. (Author/YDS)

Explains "Mathematical Mind Journeys," a lesson format that promotes computational fluency through variable practice that relies on mathematical memory rather than rote memorization. (Author/NB)

Considers young peoples' views of infinity prior to instruction in the methods mathematicians use in addressing the subject of infinity. Presents a partially historical account of studies examining young peoples' ideas of infinity. Four sections address potential pitfalls for research in this area and the work of Piaget, issues concerning the…

Demonstrates how research-based knowledge about students' incompatible answers to different representations of the same task could be used in mathematics instruction. Describes the 'It's the Same Task' research-based activity which encourages students to reflect upon their own thinking about infinite quantities and avoid contradictions by using…

Analyses several examples of tacit influences exerted by mental models on the interpretation of various mathematical concepts in the domain of actual infinity. Specifically addresses the unconscious effect of the figural-pictorial models of statements related to the infinite sets of geometrical points related to the concepts of function and…

Encouraging children to think about their learning through simple, easy-to-plan activities facilitates better understanding and retention of science concepts. (Author)

The role of equivalence class formation in delayed position recognition span performance was examined with three mentally retarded adults. Matching-to-sample training established equivalence classes. In subsequent span tests, subject-produced numeral names led to dramatic increases in span scores. The equivalences provided precursors of verbal…

Considers use of and suggests referents for the terms, race, culture, and ethnicity, in multicultural counseling. Discusses findings from a pilot study of culture and race concepts. Recommends clarification of terminology in counselor education and specification of intended referents in counseling research. (PVV)