Research about modeling emphasizes the importance of heterogeneity in science learning. At the same time, a growing body of scholarship seeks curricular pathways for epistemic and representational convergence. In response to this tension, we propose two constructs: heterogeneity-seeking curricula and commitments. Heterogeneity-seeking curricula…

We proposed and evaluated an instructional framework for increasing students' ability to understand and regulate collaborative interactions called Co-Regulated Collaborative Learning (CRCL). In this instantiation of CRCL, models of collaborative competence were articulated through a set of socio-metacognitive roles. Our population consisted of 28…

As scientific models of student thinking, learning progressions (LPs) have been evaluated in terms of one important, but limited, criterion: fit to empirical data. We argue that LPs are not empirically adequate, largely because they rely on problematic assumptions of theory-like coherence in students' thinking. Through an empirical investigation…

In this article, the author wishes to emphasize two fundamental points related to theory that were significantly underplayed in Simon et al.'s "A Developing Approach to Studying Students' Learning through Their Mathematical Activity" (2010). The author believes these points are central to any study of children's mathematical learning. The first…

When reading multiple texts about controversial scientific issues, learners must construct a coherent mental representation of the issue based on conflicting information that can be more or less belief-consistent. The present experiment investigated the effects of text-belief consistency on the situation model and memory for text. Students read…

Based on a three-year-long ethnography of the hobby of model rocketry, I present a practice-centered theory of interest relationships--that is, the pattern of long-term, self-motivated engagement in open-ended practices that has been theorized under the concept of "individual interests". In contrast to extant theories of individual interests, in…

A schema based view of addition development is compared with Siegler's latest strategy-choice model, which includes an addition goal sketch (a basic understanding of "the goals and causal relations" of addition; Siegler & Crowley, 1994, p. 196). This metacognitive component in the latter model is presumed to develop as a child practices a basic…

Examined the different influences of comprehension-skill and domain-knowledge components on learning from text. Found that learning from an expanded text with explicit causal relations was related to reading comprehension skill rather than prior knowledge, whereas learning from an unexpanded text that did not spell out causes was a function of…

This study explored impact of teaching high schoolers coordinated or uncoordinated models of static electricity. Posttest results showed that students who were taught the uncoordinated models outperformed those in that control group; however, the coordinated model group did not outperform its control group. Process data suggest that the…

Evaluated the PREG conceptual model of human question asking. Found the model was sufficient as it accounted for nearly all of the questions produced by students, and was discriminating in that it could identify the conditions in which particular classes of questions are or are not generated. (Author/SD)

Examined discourse components, interaction patterns, and reasoning complexity of eighth-graders in two science classrooms as they constructed mental models of the nature of matter. Found that teacher-guided discussions were more efficient for attaining higher reasoning levels and higher quality explanations, but peer discussions were more…