Sourcing involves interrogating historical documents, asking questions about their attributes to determine their relation to the historical event or time period under study. In this article, a university researcher and a sixth-grade teacher describe a set of heuristics that the teacher developed for supporting her students' sourcing of historical…

The process of proofs and refutations described by Lakatos is essential in school mathematics to provide students with an opportunity to experience how mathematical knowledge develops dynamically within the discipline of mathematics. In this paper, a framework for describing student processes of proofs and refutations is constructed using a set of…

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…