Based on the analysis of available research on students' alternative conceptions about the particulate nature of matter, we identified basic implicit assumptions that seem to constrain students' ideas and reasoning on this topic at various learning stages. Although many of these assumptions are interrelated, some of them seem to change or…

Many studies report information overload as one of the main problems that students encounter in online learning via computer-mediated communication. This study aimed to explore the sources of online students' information overload and offer suggestions for increasing students' cognitive resources for learning. Participants were 12 graduate students…

Examines the types of comprehension problems that students experience in classrooms and the tactics they use to resolve those problems. Reports meaningful distinctions among classroom comprehension problems, and finds that the tactics used vary systematically in relation to the situation (class size and instructional format) and the type of…

The purpose of this study is to investigate how sixth graders develop inquiry skills to construct explanations in an inquiry-based learning environment. We designed a series of inquiry-based learning activities and identified four inquiry skills that are relevant to students' construction of explanation. These skills include skills to identify…