Teacher practices created experiences for students to guide their inquiry by creating opportunities to gather data through field notes. Students examined their county and gathered data from the field on a daylong investigation of their county. Students generated questions and considered their observations at multiple stops. Students learned to…

The purpose of this study was to examine students' understanding of argumentation when talk and writing were provided as learning tools, as well as to explore how talk and writing can best support students' construction of scientific knowledge. Most current studies have examined discourse patterns over a short interval of only a few class periods…