The purpose of this study is to describe social studies teachers' perceptions related to their practices in teaching concepts within the context of social studies instruction in order to enhance students' vocabulary development in their classes. The study focuses on how students' breadth and depth of vocabulary knowledge is supported by teachers'…

This study examines how a class of Grade 7 students employed linguistic resources to explain density differences. Drawing from the same data-set as a previous study by, we take a language perspective to investigate the challenges students face in learning the concept of density. Our study thus complements previous research on learning about…

Argumentation is one of the central practices in science learning and helps deepen students' conceptual understanding. Students should learn how to communicate ideas including procedure tests, data interpretations, and investigation outcomes in verbal and written forms through argument structure. This article presents a negotiation model to…