A number of recent policies have tried to improve science learning by increasing the number of science courses required for high school graduation or admission to higher education institutions. But it is highly unlikely that these mandates alone will materially affect the amount and quality of science education for students. Any effort to improve…

Elaboration theory is a prescriptive model of instruction which focuses on how to structure and organize subject matter while attempting to be consistent with cognitive theories of human learning. In this system, instruction in the subject matter should proceed sequentially, from the general to the specific, with each part explained and related to…

The purpose of this study was to construct and study the impact of a research-based sequence for teaching the concept of modelling to seventh-grade science students. We identified students' notions of models and the aspects of school science to be addressed regarding the model concept, which were then taken into account when we planned the…