Presents three models that have been effective for teaching chemical equilibrium and Le Chatelier's principle: (1) the liquid transfer model, (2) the fish model, and (3) the teeter-totter model. Explains each model and its relation to Le Chatelier's principle. (MVL)

Ways in which children think of 10 are considered first. Then a study with 14 second graders is reported; students were placed at three levels with respect to their addition and subtraction concepts. Findings are detailed, along with implications for instruction. (MNS)

Considered are concept development and errors in using both Logo and BASIC made by 25 prospective teachers in a computer literacy course. Understanding errors that students exhibit in programing may affect the ways mathematics teachers understand the process of learning structured content like mathematics. (MNS)

Presented are examples of how the terminology used in typical rate questions is misunderstood by a large proportion of students. Explanations based on both interviews and paper-and-pencil tests are given as to why this phenomenon exists. (MNS)

Analyzes the concept of teaching from various aspects. Reviews research on students' conceptions of natural phenomena, conceptual change, and teacher thinking. Suggests an appropriate conception of teaching science. (YP)

Four experiments investigated children's ability to notice and remember events in which the acquisition of factual information occurs. Results indicated that children tend to report they have known newly learned information for a long time, suggesting that children have some understanding of knowledge acquisition, but not at the level of adults.…

Examined the nature of perceptual classification in children and young adults. Found that most children attend selectively to one stimulus dimension when making perceptual classification judgments. Suggests that this developmental trend does not appear to be a holistic-to-analytic shift but rather a trend toward greater consistency in following a…

Two lessons introducing probability taught by an expert and a nonexpert sixth-grade teacher were analyzed for the quality of teaching. The expert teacher more consistently explicated the relationship between formal symbols and the given mathematical tasks. Other differences concerned the handling of student contributions. (40 references) (MKR)

Students' understanding of the concept of relative speed is described. A variety of ways of understanding relative speed and of viewing a problem that dealt with this concept were uncovered. The results are used to suggest ways for teachers to proceed in assisting students to enhance their understanding of relative speed. (PR)

At the Duquesne University (PA) school of pharmacy, five self-paced computer exercises using a molecular modeling program have been implemented to teach stereochemical concepts. The approach, designed for small-group learning, has been well received and found effective in enhancing students' understanding of the concepts. (Author/MSE)

In 2 experiments, 261 middle school students processed an analogy and responded to factual and inferential target-domain questions in a study of variables that contribute to the formation of analogical misconceptions. Results of both experiments support a six-variable model of analogical misconception formation. (SLD)

Summarizes current cognitive psychological knowledge concerning second language vocabulary acquisition and discusses implications for the development of effective computer-assisted vocabulary acquisition methods. (85 references) (Author)

This study examined the matching and sequencing of quantities, numerals, and arbitrary forms by two individuals with mental retardation. Results showed that sequence training did not readily lead to new matching performances, unlike prior research with college students. Instead, training in matching to sample yielded emergent sequence production…

Discusses a visual programming language, Function Machine Lab, which helps students with the concept of function using the function machine image. (MKR)

Two experiments investigated perceptual primacy of dimensional and similarity relations in stimulus classification of mentally retarded children. Results support a distinction between separable and integral stimulus structures, but do not support an integral-to-separable shift in perceptual development. Results suggest implications for…