This study investigated the national impact of the Collaboratives for Excellence in Teacher Preparation program (CETP). Impact of the program was examined in two different settings: institutions of higher education, and K-12 science and mathematics classrooms. The focus of this study was to determine the impact of the CETP program on the…

Investigates the effect of explicit problem-solving instruction on high school students' (N=145) conceptual understanding of physics. Findings indicate that the explicit strategy improved the quality and completeness of students' physics representations more than the textbook strategy. No difference was found between the strategies on match of…

Compares the costs of four assessment formats: (1) multiple choice; (2) open ended; (3) laboratory station; and (4) full investigation. Tracks the amount of time spent preparing the devices, developing scoring consistency for the devices, and scoring the devices as they were developed. Compares times as if 1,000 students completed each assessment.…

Argues that science educators often face the problem of abnormal distributions when conducting large-scale assessments or evaluating national curriculum projects that require complex sampling plans. Examines the precision of science test scores. (DDR)