While there is consensus in the science education community on the importance of crosscutting concepts (CCCs) for all students, teachers have been given limited guidance on how to integrate CCCs into science instruction. In this article, the authors propose that teachers view CCCs as resources that students use in their everyday lives to make…

The adoption of "A Framework for K-12 Science Education" and the Next Generation Science Standards (NGSS) across the U.S. requires that the field of science education develops high-quality instructional materials. This need is particularly urgent as schools and districts are expected to design or adapt instructional materials for an…

In the climate of standards-based instruction and accountability, scaling up educational innovations is necessary to bring about system-wide improvements. As a result of fundamental tensions involving effective educational policies and practices for diverse student groups, scaling up is especially challenging in multilingual, multicultural, and…

Based on the assumption that teaching behavior is influenced or determined by teachers' theories and beliefs of teaching, this study sought to examine how middle school science teachers perceive their instructional roles and how they go about improving their instructional effectiveness. Eleven teachers from two middle schools of the Midwest…

Derived from the perspective which views teachers and students as rational humans with limited capacity of perception and reasoning, this study describes how teachers differentially treat students and examines what underlies the differential treatment. Three science teachers from an urban middle school in the Midwest participated in the study.…