In order to deepen students' understanding of natural phenomenon and how scientific knowledge is constructed, it is critical that science teachers learn how to engage students in productive scientific argumentation. Simulations for teachers are one possible solution to providing practice-based spaces where novices can approximate the work of…

Summarizes results of the meta-analysis of 105 research studies dealing with effects of new science curricula on student performance. Twenty-seven different new science curricula involving one or more measures of student performance were included in the analysis. Positive performance patterns were found in all new curricula examined. (JN)

Investigated importance, according to teachers (N=257), of a validated list of 10 aims for school practical work at three grade levels. Also investigated the orientation of students (N=724) toward these same aims (expressed as influences) and compared aims for teachers with influences as perceived by students. (Author/JN)