Promoting understanding of chemical bonding and spontaneity through student explanation and integration of ideas

This article explores the effectiveness of intervention discussion sections for a college general chemistry course designed to apply research on student preconceptions, knowledge integration, and student explanation. Two interventions, on bond energy and spontaneity, were tested and intervention student performance was compared with that of a control group that did not use the experimental pedagogy. Results indicate that this instruction, which identifies students' initial conceptions and integrates those ideas into class discussion, leads to enhanced conceptual understanding. The intervention group outperformed the control group on a written course midterm, the thermodynamics portion of a standardized American Chemical Society examination, and an in‐depth interview. In interviews, the intervention group students explained the energetics of bond breaking and formation at a more sophisticated level than did the control students. In contrast, control students were more tenuous in their thinking, tended to contradict themselves more when discussing bond energy, and harbored more misconceptions about spontaneity. © 2002 Wiley Periodicals, Inc. J Res Sci Teach 39: 464–496, 2002     

Promoting Race Pedagogy in Higher Education: Creating an Inclusive Community

ABSTRACT

The current study reports outcomes of a professional development model intended to strengthen faculty members’ cultural competence and skills for teaching about diversity and inclusion. Creating Inclusive Communities (CIC) was developed collaboratively by faculty from across social science disciplines based on a theoretical framework emphasizing learning principles, critical consciousness, and White racial identity development. This study examined the outcomes of the model on student cultural competence based on pre-post survey analysis. Findings indicate that students perceived a benefit from course activities related to race pedagogy and showed statistically significant results in two of three courses. These findings indicate that the infusion of an inclusive model, including in courses not directly related to diversity topics, has potential benefits to students. Additionally, the impact is strengthened through a more integrated approach over the course of the semester.     

ABC problem in elementary mathematics education: Arithmetic <Emphasis Type="Italic">before</Emphasis> comprehension

Mathematical habits of prospective teachers affect problem comprehension and success and expose their beliefs about mathematics. Prospective elementary teachers (PSTs) (n = 121) engaged in a problem solving activity each week in class. Data were collected from PSTs enrolled in an undergraduate elementary mathematics methods course at a Southeastern State University over multiple semesters (six semesters, seven classes). PSTs’ solution methods for one intentionally misleading mathematics problem were analyzed using a convergent parallel mixed methods content analysis. Two-thirds of PSTs misunderstood the problem scenario and directly translated numbers from the problem text. PSTs who answered correctly used a problem model strategy to comprehend the scenario and were more likely to use multiple models, draw a diagram, and draw a diagram before using another model. However, a large number of PSTs who answered incorrectly also used multiple models and drew diagrams. Self-correction was not common (8 of 121), because their equations did not provide feedback or support comprehension. Three kinds of imprecision also affected problem comprehension and were evident in both correct and incorrect solutions. Intentionally misleading problems helped PSTs see consequences of their mathematical habits and highlighted the importance of sense making and precision when creating problem models.     

Assessing the progress and the underlying nature of the flows of doctoral and master degree candidates using absorbing Markov chains

In this paper, absorbing markov chains are used to analyse the flows of higher degree by research candidates (doctoral and master) within an Australian faculty of business. The candidates are analysed according to whether they are full time or part time. The need for such analysis stemmed from what appeared to be a rather poor completion rate (as reported by the University concerned). However, this reported completion rate was a ‘macro’ figure that aggregated PhD and Master (by full time and part time) completions together. If there really was a problem, then the Faculty needed to know where in the system it was and what potentially might then be done to remedy the problem. The assembling of data into an appropriate database was difficult and required considerable care, but an adequate database was developed. The application of the absorbing markov chains to the problem resulted in an increase in the level of understanding associated with the long term underlying probabilities of completion and also expected durations of candidature. This information highlighted one area of concern. With the information gained from this study, appropriate strategies can subsequently be put in place for the rectification of some of the areas of concern discovered in the analysis. Areas for further research are also highlighted in this paper. Based on an earlier version of a paper delivered at the Western Decisions Sciences Institute 34th Meeting, Vancouver, Canada, 2005.     

Dyslexia as a limitation in the ability to process information

In an earlier paper (Miles and Wheeler 1975) it was reported that dyslexic subjects, aged over 13, were less able than suitably matched non-dyslexic subjects to respond correctly to arrays of tachistoscopically presented digits. A further experiment is now reported involving a younger age-group: 15 dyslexic subjects, average age twelve and one-half, were matched for spelling age with 15 non-dyslexic subjects, average age eight and one-half; and since the dyslexic subjects were appreciably less successful it is argued that “maturational lag” does not, on its own, fully account for the difference in performance between the two groups. A similar procedure was repeated with 41 dyslexic and 41 non-dyslexic subjects, all aged between 10.4 and 14.4, both with and without the introduction of a visual masking stimulus immediately after the test stimulus. Twenty undergraduate “fast-readers,” 20 undergraduate “slow-readers,” and four undergraduate dyslexic subjects were also compared both on their responses to tachistoscopically presented digits and on their performance in a visual search task. The results, taken in conjunction, suggest that dyslexia can be regarded as some kind of limitation in the ability to process information, perhaps affecting in particular the “visual code store” postulated by Posner et al. (1969). This paper was prepared for deliveryin absentia at the 27th Annual Conference of The Orton Society, in New York City, November 1976.     

Rorschach responses of dyslexic children

Fifteen dyslexic children between the ages of 8 and 16 were given the Rorschach ink blot test and their responses were compared with those of 12 suitably matched controls. It was found that they made very considerable use of the shape of the cards, but much less use of the other determinants (color, texture, etc.). Unlike the controls they seldom turned the cards around so as to obtain some fresh “view,” and the overall number of responses per person was considerably less, with many of them giving only one response per card. It is suggested that the educational and social pressures on a dyslexic child often make him reluctant to commit himself in a context where “playing safe” is socially acceptable.