Chemistry is considered a difficult subject by most students. Its difficulty lies in Chemistry's complex and abstract nature. This highly abstract nature requires constant interplay and coordination between the macroscopic, particulate, and symbolic representations. Experts can successfully navigate the various representations without overloading…

Mathematical Argumentation skills have historically been overlooked in assessment, but the inclusion of Mathematical Argumentation in the Common Core State Standards (CCSS) as one of the Standards of Mathematical Practice challenges assessment developers to assess this mathematical practice. Explanation and justification of one's own thinking to a…

This dissertation study focused on complications and opportunities that surface for classroom learning in the intersections of a teacher's methods, students' literacies, and digital space. Though researchers have discussed adolescents' literacies and participation in out-of-school digital spaces, there persists a need to explore and document the…

This paper aims to explore teacher strategies for managing student participation in a complex Multi-user Virtual Environment. Data include transcribed recordings from a task-based EFL course in Second Life. Conversational Analysis is adopted to analyze the teacher's verbal language output in the transcript, and a student questionnaire is used to…