Describes the problem-solving behaviors of experts and novices engaged in solving seven chemical equilibrium problems. Lists 27 behavioral tendencies of successful and unsuccessful problem solvers. Discusses several implications for a problem solving theory, think-aloud techniques, adequacy of the chemistry domain, and chemistry instruction.…

Presents a mechanics problem illustrating that Newton's second law and the linear conservation of momentum principle must be used in an inertial reference frame. Provides an analysis of the problem. (YP)

Examined are tenth-grade Western Australian students' conceptual knowledge of gravity and the motion of the planets. Students were interviewed with seven cards, and a four-item diagnostic test based on the interview data on the first four cards was developed. A total of 113 students' responses to the test are summarized. (YP)

Discussed is the preparation of a lesson plan. The lesson objectives, prerequisite concepts, materials and preparation, lesson, and quizzes are described. The evaluation criteria of the lesson plan is suggested. Provided is an example of lesson plan on guard cells. (YP)

Surveys the trait anxiety profile and preference concerning types of examinations of preservice science teachers. Reports that the students prefer examinations on understanding and analyzing rather than on knowing and remembering, and that students' anxiety states correlate with the type of examination and sex. (Author)

Presents a collection of suggestions, ideas, and reminiscences relating the first-day classroom activities of 13 different teachers at high schools and colleges. (YP)

Describes the educational system and national preparations for the International Physics Olympiad of the Soviet Union and Romania. Suggests some recommendations for American education. (YP)

Discusses the average speed differences between hydrogen and oxygen molecules contained in a jar. (YP)

Describes a performance assessment protocol that rates six goals: (1) methodology of research, (2) use of equipment, (3) accuracy in measurement, (4) application of concepts and formulas, (5) use of mathematics, and (6) completeness and clarity. Provides an example performance task evaluation sheet. (MVL)

The use of content validity as the primary assurance of the measurement accuracy for science assessment examinations is questioned. An alternative accuracy measure, item validity, is proposed. Item validity is based on research using qualitative comparisons between (1) student answers to objective items, (2) clinical interviews, and (3) student…

Examines science achievement for similarities and differences by gender, race, and ethnicity. Uses the National Assessment of Educational Progress (NAEP) science proficiency data for 1990 and focuses on students' average proficiency scores in four science content areas. (DDR)

Describes the use of a quiz that asks elementary but probing questions about chemistry and delivers the message to students that they have much to gain from chemical education. Arises out of concern over lack of student motivation in chemistry. (DDR)

Studied content domain, format, and level of inquiry as factors contributing to the large variation in student performance across open-ended measures. Results for more than 1,200 eighth graders do not support the hypothesis that tasks similar in content, format, and level of inquiry would correlate higher with each other than with measures…

Studied the predictive value for success in medical school of three science tests, the secondary school matriculation examination, and learning-from-text (LFT) tasks taken by 109 Finnish medical students. Results show that the three science tests predicted medical course grades, and that the LFT tasks had predictive value for the pace of studying…

To examine the predictive utility of three scales provided in the released database of the Third International Mathematics and Science Study (TIMSS) (international plausible values, standardized percent correct score, and national Rasch score), information was obtained on the performance in state examinations in mathematics and science in 1996…