My research focuses on learning with multiple graphical representations. Learning materials in most STEM domains use graphical representations to emphasize conceptual aspects of the learning content. When and how do multiple graphical representations help students' conceptual learning? In one line of my research, I investigate how best to provide instructional support for students to benefit from graphical representations. My research shows that students need to be supported to engage in sense-making processes to conceptually understand how different graphical representations depict information, and in fluency-building processes to acquire perceptual expertise in using representations and in finding correspondences between them. Another line of my research focuses on making use of the novel opportunities that educational technologies offer for learning with graphical representations: students can interact with graphical representations and receive immediate feedback on these interactions. As part of my research, I develop intelligent tutoring systems that include interactive graphical representations. In investigating these questions, I employ a variety of methods, including classroom experimentation, educational data mining of log data obtained from intelligent tutoring systems, eye-tracking research, and think-aloud studies.
