Proportional reasoning is the ability to use multiplicative thinking and make multiple comparisons. It is known to be challenging for many students and at the same time, many teachers require support to develop sufficient subject matter knowledge and pedagogical content knowledge to teach the diverse concepts that underpin proportional reasoning.…

The motivation for this paper is the authors' recent work on several randomized control trials in which they found the primary result, which averaged across subgroups or sites, to be moderated by demographic or site characteristics. They are led to examine a distinction that the Institute of Education Sciences (IES) makes between "confirmatory"…

Despite the long history of the study of pedagogical content knowledge (PCK), two facts remain obvious. First, there are almost as many conceptions regarding the definition of PCK as there are researchers interested in it. Second, it is largely unclear which methods enable teacher educators to best prepare teacher candidates to use PCK. Recently,…

This paper provides practical guidance for researchers who are designing and analyzing studies that randomize schools--which comprise three levels of clustering (students in classrooms in schools)--to measure intervention effects on student academic outcomes when information on the middle level (classrooms) is missing. This situation arises…

The history of strategies research during the past quarter century has been a story of significant conceptualizations and reconceptualizations regarding the nature, development, and teaching of cognitive and metacognitive strategies. Theoretical models, empirical research, and discussions contributed by Michael Pressley have been central to…

Students learn more from certified teachers than they do from uncertified teachers, even when the uncredentialed teachers are Teach For America recruits from some of the nation's top colleges, a Stanford University research team concludes from a study of test scores in Houston. Findings from the study, which researchers presented in Montreal on…

Much has been written about the value of teacher research for inservice teachers. Despite the existence of several studies affirming these words, studies that richly describe how student teachers learn to do teacher research and then investigate the impact of inquiry on student teachers and teacher educators, particularly in culturally and…

Some common complications that arise in collaborative research between school and university researchers, as well as some conditions for successful collaboration are described in this report. Difficulties possibly attributable to developmental levels of the researchers are discussed utilizing Kegan's (1982) theory of constructive developmentalism.…