Eliciting student thinking as resources for learning is central to productive sense making. Educators use pedagogical tools such as talk moves to direct classroom conversations toward and sometimes away from student learning. This mixed methods study describes how teaching assistants (TAs) use talk moves as pedagogical tools to elicit and work…

Research on science teacher cognition is important as findings from this research can be used to improve teacher training, leading to improved classroom practice. Previous research has often relied on two underlying assumptions: Cognition is an individual process, and these processes are detailed and introspective. In this paper, we put forth a…

Science centers such as museums and planetariums have used stereoscopic ("three-dimensional") films to draw interest from and educate their visitors for decades. Despite the fact that most adults who are finished with their formal education get their science knowledge from such free-choice learning settings very little is known about the…

Darwinian evolution is difficult to understand because of conceptual barriers stemming from intuitive ideas. This study examined understanding of evolution in 52 students (M = 14.48 years, SD = 0.89) before and after a guided field trip to a natural history museum and in a comparison group of 18 students (M = 14.17 years, SD = 0.79) who did not…

While the opportunity to engage in scientific reasoning has been identified as an important aspect of informal science learning (National Research Council, 2009), most studies have examined this strand of science learning within the context of physics-based science exhibits. Few have examined the presence of such activity in conjunction with live…

The characterization of students' cognitive biases is of central importance in the development of curriculum and teaching strategies that better support student learning in science. In particular, the identification of shortcut reasoning procedures (heuristics) used by students to reduce cognitive load can help us devise strategies to foster the…

Models and modeling are a major issue in science studies and in science education. In addressing such an issue, we first propose an epistemological discussion based on the works of Cartwright (1983, 1999), Fleck (1935/1979), and Hacking (1983). This leads us to emphasize the transitions between the abstract and the concrete in the modeling…

Two disparate research programs have addressed the challenge of instructional multimedia design. One, based on cognitive load theory, has focused on ways of reducing unnecessary cognitive load during instruction to free up resources for learning. The other, based on constructivism, has centered on interactive multimedia, allowing students to build…

To explore the ways in which teacher-guided and student-centered instructional approaches influence students' conceptual understanding of seasonal change, we designed a technology-enhanced learning (TEL) course to compare, by means of concept maps, the learning outcome of students in two groups: a teacher-guided (TG) class (with whole-class…

Guided scientific inquiry investigations are designed to have students reach particular answers through the thinking processes and activities of scientists. This presents a difficult challenge for teachers who must selectively hold back answers from students to maintain an atmosphere that encourages student-directed inquiry. The present study…

In two investigations students who read an "organizer" before studying biological material scored higher after the learning sessions, and on retention tests, than students who read an historical passage prior to instruction. (AL)

Reports the results of a study of the relationship between cognitive style and achievement in a modern elementary science program. (JR)

Addresses the importance of recognizing the prior knowledge and misconceptions of science educators. Provides perspectives on the nature of knowledge, conceptions of learning, nature of science and of teaching, and the relationship between general principles of learning and teaching. (ML)

Discussed are the implications of the three main stages of conceptual change--"awareness, disequilibrium, and reformulating"--on misconceptions of grade 10 students in Israel. The difficulties and problems encountered with the procedure are included. (KR)

Analyzes a teaching episode to determine how a conflict is perceived and overcome by students as a result of verbal interaction between the teacher and the students. Discusses the particulate nature of matter with students aged 15-16 after observing a glass of water containing a rock and an ice cube. (Contains 25 references.) (Author/YDS)