Science reforms in the United States' education systems have been ongoing for over the last 50 years. These reforms are continually revised in response to the demand to increase employment in STEM careers. The Next Generation Science Standards (NGSS) released in 2013 are the most recent standards-based science reform effort created using years of…

My dissertation explores how elicited gestures can support 6th grade students' understanding of nonlinear dynamics of complex systems. My hypothesis is that elicited gestures make these patterns salient to the student, who learns about these quantitative dynamics via embodied mechanisms. To elicit these gestures, I designed a computer simulation…

This study used a design research framework to teach secondary high school science students about environmental sustainability. A high school teacher and researcher collaborated to design a two week environmental science unit to help students make sense of complex environmental sustainability issues. This dissertation study sought to answer the…

This dissertation conducted a science classroom intervention using two instructional approaches, computational modeling and paper-based pictorial modeling, in the context of food webs. A series of research papers were written on the impact of the intervention on students' attitudes and learning, and on teachers via professional development and…

Complex systems are an important topic in science education today, but they are usually difficult for secondary-level students to learn. Although graphic simulations have many advantages in teaching complex systems, scaffolding is a critical factor for effective learning. This dissertation study was conducted around two complementary research…

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…