Investigates the conceptions and representations of light propagation, image formation, and sight typical to preinstruction learners (N=139). Findings indicate that preinstructional students display some familiarity with optical systems, light propagation, and illumination patterns and have not developed a consistent descriptive and explanatory…

Examines which of the warrants of authority, coherence, and empirical evidence were invoked by grade 8 science classroom participants in their daily interactions, and whether these were linked to particular teaching referents. Results indicate that when the teacher embraced a context exposure referent at the expense of constructivism, the warrant…

Discusses ideas about the particulate nature of matter and assesses the extent to which these represent a compromise between scientific and educational considerations. Analyzes relations between the particulate nature of matter in science and science education in an attempt to understand children's inclination to attribute all kinds of macroscopic…

Investigates the effects of conceptual assignments and conceptual change discussions on high school students' achievement and misconceptions about force and motion. Analyzes pretest and posttest data from the Force Misconception and Force Achievement Tests (FMFAT). Discusses the effects on the conceptual change discussion on reducing…

Examines the predator-prey relations and the preconceptions held by children (n=506) on the construction of food chains. Results show that the classification of herbivores and carnivores is based on children's preconceptions of size and ferocity and sheds light on the difficulties students have at higher education levels in the resolution of food…

Deals with the problem of the proper interpretation of discourse between students and teachers in classrooms. Presents several interpretations of a concrete classroom protocol in terms of misconceptions. Draws on Davidson's principle of charity and distinguishes between belief and meaning to present an analysis that interprets the discourse…

High school chemistry students' (n=183) applied and theoretical knowledge of dissolution, diffusion, effusion, and states of matter were compared. Study found that students' formal reasoning ability and their preexisting knowledge are associated with their conceptions and use of particulate theory. A significant difference between applied and…

This review of literature focuses on three decades of research related to precollege student understandings about the nature of science. Although the majority of studies show that student understandings are less than desirable, there is research that indicates that student conceptions are acceptable. (PR)

Analyzes students' attempts to answer examination questions involving stoichiometry and chemical equilibrium and reports that the majority of the students do not fully understand either concept. Concludes that the main difficulty with these topics is that they are highly abstract and first taught to students before they have reached the stage of…

This research used semistructured interviews to investigate students' (n=32) understanding of electrochemistry following a 7-9 week course of instruction. Three misconceptions were identified and incorporated with five previously reported into an alternative framework about electric current involving drifting electrons. Also noted was the tendency…

This study questions the effectiveness of a traditional teaching-by-example technique when used with students who hold misconceptions. Interview techniques were used to explore students' (n=21) responses to two different uses of examples and to provide indications of student reasoning. Results indicate that when students hold a misconception,…

Criticizes an article by Browning and Lehman (1988) for (1) using "gene" instead of allele, (2) misusing the word "misconception," and (3) the possible influences of the computer environment on the results of the study. (PR)

Authors respond to criticisms by Smith in the same issue and defend their use of the term "gene" and "misconception." Authors indicate that they did not believe that the use of computers significantly skewed their data concerning student errors. (PR)

Word associations were used to map high school students' concepts of "chemical equilibrium" and "equilibrium." It was found that the preconception of the two concepts was differentiated on noncritical dimensions. (Author/CW)

Investigation of (n=101) 17- to 18-year-old students' responses to a task relating to Boyle's Law for gases found that 34% to 38% of students did not understand the concepts of volume and mass, respectively, of a gas under the given circumstances. (Author/MKR)