The authors evaluated the effects of P-SELL, a science curricular and professional development intervention for fifth-grade students with a focus on English language learners (ELLs). Using a randomized controlled trial design with 33 treatment and 33 control schools across three school districts in one state, we found significant and meaningfully…

In the last few years, numerous reports have pointed to the overall lower achievement of American students in science, particularly in the physical sciences, when compared to American students of the last two decades and to students from other countries. While there is reason to believe that American elementary school children are taught less…

In February, 1988, random samples of students from five countries (Ireland, Korea, Spain, the United Kingdom, and the United States) and four Canadian provinces (British Columbia, New Brunswick, Ontario, and Quebec) were given an assessment of mathematics and science achievement, and a questionnaire. This document summarizes the results of these…

This study investigated the relationships among the symbolic representation of problems given to students to solve, the mental representations they use to solve the problems, and the accuracy of their solutions. Twenty eleventh-grade science students were asked to think aloud as they solved problems on the ideal gas laws. The problems were…

Explored the relationship between high school students' (N=37) performances on the Tomlinson-Keasey and Campbell paper-and-pencil test of formal operations and a set of traditional, individually administered, Piagetian developmental tasks. Correlations between the traditional, formal operations tasks and paper-and-pencil tests were low. (Author/DS)

This publication reports the results of the second International Assessment of Educational Progress for science. Twenty countries assessed the mathematics and science achievement of 13-year-old students and 14 countries assessed 9-year-old students in these same subjects. In some cases, participants assessed virtually all age-eligible children in…

Recent studies show that national control of K-12 curriculum yields important payoffs in terms of greater curricular coherence and, as a result, higher test performance on international tests such as those used in the Third International Mathematics and Science Study. This paper examines the connection between national control of curriculum and…

Testwise responses of grade-school students to multiple-choice science items and the intercorrelations between different testwiseness skills were examined in this document. A total of 134 third-grade, 133 fifth-grade, and 143 sixth-grade students from two elementary schools in a large suburban school district in Utah responded to 60 science items…