A study examined the effects of a new Hong Kong policy requiring Chinese as the language of instruction on secondary students' learning of science. Science achievement test scores at 100 secondary schools indicate that previous use of English to teach science may have hampered students' ability to grasp material due to the high-level thinking…

Studied the effects of group ability composition (homogeneous versus heterogeneous) on group processes and outcomes for high-ability students completing science assessments. Results for 83 high ability students show the quality of group functioning serves as the strongest predictor of high-ability students' performance and explained much of the…

Provided are copy masters, instructions for use, and grading criteria for six problems used as part of the practical assessment for a modular science course. Each problem gives a narrative and a list of materials necessary to complete the problem. (CW)

Students' justifications for the three-item formats provided were compared. The study confirmed the usefulness of justifications as a diagnostic tool and offered recommendations regarding the use of justifications, including their use in the construction of two-tier items. (Author/CW)

Illustrated is the confusion over centrifugal force in sample problems, diagrams, formulas, and examples. Some recommendations to remedy the situation are suggested. (YP)

A questionnaire and demonstrations were used to identify students' conceptions about the composition of orthogonal velocities. Four questions from the questionnaire are provided and the results for each question are reported. The four implicit vector characteristics of this study are appended. (YP)

Describes a paper-and-pencil test for high school biology students measuring science process skills, such as developing hypotheses; making predictions; identifying assumptions; analyzing data; and formulating conclusions. Reports some data on reliability and validity of the test. Provides all 35 items of the test. (YP)

Describes a study of the understanding of basic electrical concepts shown by 15-17 year-old students in England, France, Netherlands, Sweden, and West Germany. Reports substantially the same pattern of learning difficulties across countries. Provides sample items. (Author/YP)

Describes the impact of North Carolina's testing program in chemistry on curriculum and instruction from teachers' perspectives. A random sample of 100 teachers received a questionnaire yielding a usable sample of 48, of which 8 were interviewed. Results suggest testing is making the chemistry curriculum more uniform across the state. It is not…

Described are the results of a conceptual physics survey given to a small group of high school physics students with the goal of identifying common misconceptions held by students. Three common misconceptions were identified and are discussed in detail. (CW)

Explores whether it is easier to achieve a higher level in the KS2 Student Assessment Tasks than in those for KS3. Results of a study in which samples of both were given to two groups of pupils indicates that most obtained the same level in both or one level higher in the KS3. (DDR)

Suggests improvements for implementation of the "Views on Science-Technology-Society" instrument. Analyzes the scaling properties of some scoring procedures within the unique response model and discusses ways to produce "best fidelity" measurements. Presents a multiple-response model that could take advantage of all the…

Suggests that the results of the Third International Mathematics and Science Study (TIMSS) rank Western Australia as first in the world in science. Examines a statewide curriculum reform initiative that focuses on primary level science teacher leaders. Contains 27 references. (DDR)

Describes a variety of ways in which extension specialists can support and supplement the K-12 science curriculum in Missouri. Includes a description of the Missouri Mastery Achievement Test (MMAT) and its use in assessing agricultural literacy. (DDR)

Studied the performance of 140 Primary 6 (aged 10 and 11) school students in Scotland using 2 modes of assessment, a paper-and-pencil test and more "practical" tasks. Results suggest children, especially lower achievers, perform better on the more interactive, practical tasks. Results also suggest some gender differences. (SLD)