Examines the nature of prior mathematical knowledge that facilitates the construction of useful problem representations in the domain of geometry. Indicates that high achievers build schemas that are qualitatively more sophisticated than low achievers, which in turn helps them construct representations that are conducive to understanding the…

Differences in the status of ontological categories on the concept maps of secondary-, undergraduate- and graduate-level chemistry students were analyzed with the "Pathfinder" scaling algorithm and multidimensional scaling. Results indicate differences among groups in the structural significance of abstract process-related nodes and…

Specific modes of formal reasoning and measurements of principled moral reasoning ability were obtained from 99 10th-grade students. Hierarchical relationships were found amoung variables with combinatorial and correlational reasoning accounting for 22 percent of the variance in principled moral reasoning. Theoretical and educational implications…

High school students of various ability levels were presented economics concepts lessons, varied according to their organization or structure. Test questions over concept ranged from simple recall of information to application of economics principles. Students scored generally higher when they were presented highly structured lessons. (LMO)

Compared are the van Hiele levels of geometric thinking and the geometry curriculum recommended by the National Council of Teachers of Mathematics Curriculum and Evaluation Standards for School Mathematics. Activities which illustrate the various levels are provided by grade level with procedures. (CW)

Reports an experimental study of 80 ninth grade biology students randomly assigned to treatment and control groups to determine whether the use of human examples in instructional strategies on Mendelian genetics increases acquisition and retention of genetics concepts. Results indicate that use of human examples in contrast to traditional examples…

Reports the design of the "Mechanics Baseline Test," an instrument to assess students' understandings about concepts in mechanics. Discusses how comparisons of test results with extensive baseline data can be used to evaluate instruction at all levels. Includes a copy of the instrument. (MDH)

This book is the result of the accumulated research of five researchers from the United States and Australia on a school in Coastal Australia. The research team shared a constructivist epistemology and interpreted the qualitative and quantitative data collected over a 10-week period in two classrooms from that perspective. Each chapter discusses…

Two naturalistic research studies observed 45 eleventh grade students carrying out research paper assignments, and a third such study focused on 26 third grade students. The studies took place in Alberta (Canada) in 1993, Texas in 1996, and Washington state in 1999. From data analyzed in the interviews and written documents, the initial findings…