Argumentation, and the production of scientific arguments are critical elements of inquiry that are necessary for helping students become scientifically literate through engaging them in constructing and critiquing ideas. This case study employed a mixed methods research design to examine the development in 5th grade students' practices of oral…

This article reports on a study of teachers who have engaged in systematic research about their practice. It describes the inquiries of two urban teachers into challenges and dilemmas common to many who work with diverse groups of students. The accounts presented reveal how teachers are able to construct new knowledge about teaching when they…

The literature seems limited in what is known about conceptual processes that underlie evolution of students with learning disabilities (SLD) conceptions of fractions. This exploratory study examines how a foundational scheme of unit fractions (1/n) may evolve through the mathematical activity of two fifth grade girls. We analyze data segments…