Investigates how Greek secondary school students interacted in pairs and fours while discussing and attempting to explain physical phenomena. Results indicate that students progressed significantly more in their physics reasoning after participation in fours than in pairs. Discourse analysis in different groupings suggests that differences were…

Explores how biology majors accommodate the theory of biological evolution with religious beliefs. Responses clustered under for evolution, against evolution, compromise, and neutral. Suggests that teaching about the nature of scientific facts and theories can enhance understanding of evolutionary theory if students can discuss their values and…

Analyzes the extent to which students (n=92) understand teachers' evaluation criteria and the relation of that understanding with social class, social context of the school, teachers' conceptual demand, teachers' explicitness of criteria, and science achievement. Results indicate that there is a clear relation between students' acquisition of…

Reports descriptive study concerning student understanding of isomers. Sample of 7,441 senior high school students completed tests which contained 12 questions on isomerism. Results indicate students are inclined to restrict their concept of isomerism to compounds belonging to the same class. There was no evidence students expected molecular…

Administered questionnaires to 35 science teachers to test the hypotheses that teachers holding constructivist beliefs are more likely to detect alternative conceptions, have a richer repertoire of teaching strategies, use more effective teaching strategies for inducing conceptual change, and report frequent use of effective teaching strategies.…

Reports a study of the quality and extent of understanding of certain well-known theoretical concepts which are held by prospective teachers (N=173) of chemistry in Yemen. Results indicate that teacher understanding ranges from a partial understanding with a specific misconception to no understanding. Contains 25 references. (DDR)

Investigated the problems chemistry majors have with learning distillation concepts in traditional chemistry laboratory courses. Reports that students take the generalized concepts at face value, construct decontextualized concepts for distillation, and cannot interpret their observations or make reasoned decisions based on the theoretical…

Compares the achievement in science for ninth grade students in China and the United States. Reveals a small difference between the two groups and presents a rationale for the comparison. Contains 31 references. (DDR)

Describes a study that explores the instructional influence of presenting pictures at the molecular level when introducing chemistry concepts and solving chemistry problems. Explores the effect of the pictures on students' conceptions and problem-solving abilities. Contains 59 references. (DDR)

One of the factors affecting students' learning in science is their existing knowledge prior to instruction. The students' prior knowledge provides an indication of the alternative conceptions as well as the scientific conceptions possessed by the students. This study is concerned primarily with students' alternative conceptions and with…