Research on student thinking facilitates the design of instructional materials that build on student ideas. The pieces framework views student knowledge as consisting of independent pieces that students assemble in fluctuating ways based on the context at hand. This perspective affords important insights about the reasons students think the way…

In this experiment we investigated whether the presentation of domain principles within one text facilitates reading to learn from multiple exemplar texts that feature the importance of the principles. There were five texts about natural selection: a principles text, which described principles of natural selection, and four exemplar-based texts…

The purpose of this study was to investigate bridging inferences and learning when students with low topic knowledge read multiple complementary biology texts. Using a think-aloud protocol, we assessed students' (n = 74) cognitive processes while they read one text about principles of natural selection and three texts about examples of natural…

In this study, we examine introductory physics students' ability to perform analogical reasoning between two isomorphic problems which employ the same underlying physics principles but have different surface features. 382 students from a calculus-based and an algebra-based introductory physics course were administered a quiz in the recitation…

This thesis explores the role of multiple representations in introductory physics students' problem solving performance through several investigations. Representations can help students focus on the conceptual aspects of physics and play a major role in effective problem solving. Diagrammatic representations can play a particularly important role…

Students who harbor misconceptions often find chemistry difficult to understand. To improve teaching about the dissolving process, first semester introductory chemistry students were asked to complete a free-response questionnaire on writing balanced equations for dissolving ionic compounds in water. To corroborate errors and misconceptions…

This study investigated the kinds of knowledge and strategies beginning second-language readers used when reading texts to build their own consistent patterns of meaning and experience. Specifically, it looked at how readers' knowledge grew, where their ideas originated, and when and how their ideas were used. Subjects were five college students…

A series of partial studies aimed at understanding how much progress students can make in 1 year of second language study are described. The first concerns Swedish university students in their first year studying Spanish as a third language in higher education. Students were tested and interviewed for their perceptions of their language ability…