This dissertation sheds light on how learners of German, NSs of German, and Americans unfamiliar with German reach decisions about the nature of speech acts that they witness NSs of German perform in three authentic video clips. It also aims to gain a better understanding of what sources members of the three groups bring to bear when they attempt…

Introductory undergraduate physics courses aim to help students develop the skills and strategies necessary to solve complex, real world problems, but many students not only leave these courses with serious gaps in their conceptual understanding, but also maintain a novice-like approach to solving problems. "Matter and Interactions"…

Representations such as drawings, graphs, and computer simulations, are central to learning and doing science. Furthermore, ongoing success in science learning requires students to build on the representations and associated practices that they are presumed to have learned throughout their schooling career. Without these practices, students have…