Examined how student's strategies and associated conceptions emerged and changed over a 6-session tutoring curriculum designed to develop conceptual knowledge of linear functions. Found that the student did not erase his original conception or replace it with a conception supported by instruction, but instead refined his initial strategies and…

Examined social influences on the reasoning and rhetorical strategies of fourth graders. Found that the use of argument stratagems snowballed, there were fewer and fewer lines of discussion between successive appearances of a stratagem, and the snowball phenomenon was more pronounced during discussions with open participation than during…

Explored learning and instruction within a technology-rich, collaborative, participatory learning environment by tracking the emergence of shared understanding and products through student and teacher practices. Found that becoming knowledgeably skillful with respect to a particular practice or concept is a multigenerational process, evolving in…

Studied kindergarten children's emergent motivation to read and write, its relation to developing concepts of reading and writing, and it relation to their teachers instructional goals and classroom norms. Findings extend understanding of how young children's literacy motivation influences, and is influenced by, their classroom literacy culture.…

This study investigated whether undergraduate students encode spurious correlations in memory and exhibit them during the learning process leading to ineffectual problem solving. Findings suggested that even experienced students relied on surface-structure feature-algorithm correlations for solving new problems. Findings pose implications for…

Two experiments examined effects of content and rhetorical prompts on undergraduates' writing processes and the quality of their writing. Found that content prompts extended time spent writing and related to improved text quality. Rhetorical prompts demonstrated some influence on planning and global text quality only when presented during domain…

This case study examined changes in a fifth-grade mathematics classroom in Hong Kong when a video-based story involving mathematics problem solving was introduced. Findings suggest that new technologies not compatible with existing practice may lead to intense reflections about which aspects of the individuals, their environment, and the new…

Examined a conversation among high school physics teachers concerning a classroom discussion and teacher-written essays about their first- and second-graders' early reasoning about triangles. The examination sought to: (1) gain insight into the inquiry of teaching; (2) explore similarities and differences between inquiry in teaching and in…

Analyzed a corpus of videotapes in which university students solved physics problems to determine how students learn to understand a physics equation. Found that students learn to understand physics equations in terms of a vocabulary of elements called symbolic forms, each associating a simple conceptual schema with a pattern of symbols. Findings…

Evaluated the PREG conceptual model of human question asking. Found the model was sufficient as it accounted for nearly all of the questions produced by students, and was discriminating in that it could identify the conditions in which particular classes of questions are or are not generated. (Author/SD)

Explores school districts' responses to recent mathematics reforms. Notes that district leaders' understanding focused on piecemeal changes that often miss the disciplinary particular of the reform. Advocates inclusion of implementers' interpretation of the reform message with more conventional variables, such as local resistance to reform and…

Documented differences in frequency and type of mathematical explanations during lessons in U.S., Taiwanese, and Japanese first- and fifth-grade classrooms. Found that explanations occurred more frequently in Japanese and Taiwanese classrooms than in U.S. classrooms. Typical explanations in Asian classrooms were more substantive than in U.S.…

Examined beliefs of elementary, middle, and high school mathematics teachers regarding algebra development. Found that teachers held a symbol-precedence view of student mathematical development. High school teachers were most likely to hold the symbol-precedence view and made the poorest predictions of students' performance, whereas middle school…

Used interviews and observations of teachers and students to examine how historical concepts and research strategies were taught and learned in two fourth grade classrooms. Found that teaching method differences were obvious but student differences in concept- and strategic-knowledge development were subtle. Both teachers were partially successful…

Developed and tested a cognitive theory-based intervention teaching a procedure for designing simple controlled experiments to fourth graders. Found that the intervention produced significant gains in students' ability to create controlled experiments, provide valid justifications for their experiments, and evaluate experiments designed by others.…