The vision for science proficiency presented in "A Framework for K-12 Science Education" calls for significant shifts in both teaching and assessment. In this paper, we describe an effort to develop and validate a set of "proximal transfer tasks" for high school biology classrooms where teachers were implementing a…

Have the Next Generation Science Standards fulfilled a goal of specifying the objectives of precollege science education in clear and exact enough terms to make them readily implementable? Using students' understanding of the concept of a variable as a case in point, the author suggests that the standards, despite their seeming precision and…

This article draws on M. M. Bakhtin's (1981) notion of dialogism to articulate what it means to understand a scientific idea. In science, understanding an idea is both conceptual and epistemic and is exhibited by an ability to use it in explanation and argumentation. Some distillation of these activities implies that dialogic understanding of a…

This review examines 105 empirical studies that investigate students' views of the nature of science (VNOS), effects of curricular interventions on changing students' VNOS, and relations between VNOS and demographics, majors, and learning of science. The reviewed studies can be categorized into three theoretical frameworks: the unidimension, the…

Using the US national sample from the Third International Mathematics and Science Study (TIMSS) and the Rasch modeling method, this study identified the conceptual progression sequence of various matter concept aspects, and compared students' latent abilities against the sequence. We found that the four matter aspects, i.e. conservation, physical…