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CALCULUS STUDENTS’ AND INSTRUCTORS’ CONCEPTUALIZATIONS OF SLOPE: A COMPARISON ACROSS ACADEMIC LEVELS
Courtney Nagle Deborah Moore-Russo Janine Viglietti Kristi Martin 《International Journal of Science and Mathematics Education》2013,11(6):1491-1515
This study considers tertiary calculus students’ and instructors’ conceptualizations of slope. Qualitative techniques were employed to classify responses to 5 items using conceptualizations of slope identified across various research settings. Students’ responses suggest that they rely on procedurally based conceptualizations of slope, showing little evidence of covariational reasoning. In contrast, instructors’ responses demonstrated a multi-dimensional understanding of slope as a functional property, which applies to real-world situations and plays an integral role in the development of key calculus concepts. While relatively diverse, the instructors’ responses seldom reported determining increasing or decreasing trends of a line from its slope. This conceptualization was used frequently by students and could help them better understand how slope ties to positive and negative derivatives. The most frequently used conceptualizations for students in this study align with past research findings on the emphasis of the secondary mathematics curriculum, supporting the possibility of cultural influences (academic and geographic) on individuals’ conceptualizations of slope. Thus, this study provides valuable insight into conceptualizations of slope and provides direction for future research on slope and the broader topic of cultural influences on mathematical meaning. 相似文献
186.
Shaun L. Gabbidon George Higgins Favian Martin 《Journal of Criminal Justice Education》2013,24(3):229-244
This research examined press rankings in criminology and criminal justice (C/CJ). Based on a large sample of respondents (N = 812) from the American Society of Criminology and the American Academy of Criminal Justice Sciences, the authors solicited quality and familiarity rankings on 81 presses that publish in the area of C/CJ. The research revealed that university presses such as Oxford, Cambridge, University of Chicago, and Harvard University dominated the quality rankings. On the other hand, commercial academic presses such as McGraw‐Hill, Sage, and Prentice‐Hall dominated the familiarity rankings. Commercial academic presses including Prentice‐Hall and Sage were the presses most desired by scholars for future book publishing plans. The authors also discuss the significance of the findings for faculty in C/CJ. 相似文献
187.
This research solicited the views of criminology and criminal justice scholars regarding the most significant books in the field. Overall, the research found that the work of early theorists such as Beccaria and Lombroso were considered among the classic works in the discipline. Scholars associated with the Chicago School of Sociology (Sutherland, Shaw, and McKay) also produced books that received considerable nominations. In more recent times, books devoted to social control theory received the most nominations. In general, the research contributed to the nearly three decade‐long attempt to identify the key publications in the field. 相似文献
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This article describes an assessment of writing skills (writing sample, objective test, and self‐assessment) made by one community college. Information was gathered to design an entry‐level assessment procedure for placement in English composition and developmental writing courses. Comparing the three approaches, each of which measured different aspects of writing ability, showed that the best predictor of grade in an English composition course was the objective test. However, the statistical results of the study form only one component of an entry‐level assessment program. It may be that a writing sample is needed as part of entry‐level assessment because it points out the value of writing skill in attempting college‐credit courses. 相似文献
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The expansion in the number of people entering higher education has resulted in a substantial increase in the proportion of students enrolling in nontraditional modes, such as part-time study. This study examined the question of whether part-time study curtails the development of the types of intellectual capabilities needed for a knowledge-based economy, because the students would have markedly less exposure to a stimulating campus environment than their full-time counterparts. Graduates from discrete full- and part-time programs from 1 university in Hong Kong completed a survey seeking perceptions of the nurturing of a range of capabilities, together with measures of teacher-student relationships and type of teaching experienced. Two hypotheses were tested by structural equation modeling: (a) the same mechanism for capability development operated for full- and part-time modes and (b) the principal element of the mechanism was the nature of teaching and the quality of teacher-student interaction. Hypothesis 1 was supported because configural invariance between hypothesized models for capability development between the 2 modes was found. Hypothesis 2 was also supported because the models showed that the principal influence on capability development came from teaching for understanding, through promoting active learning experiences and the degree and quality of teacher-student interaction. 相似文献
190.
Martin J. Ward Donald Kester Kamiar Kouzekanani 《Journal of Education for Students Placed at Risk》2013,18(2):189-200
This research examined the impact of preservice teachers delivering individualized instruction of basic computer skills to at-risk, ethnic minority alternative high school students in an urban school district in South Texas. The alternative high school students' achievement of computer skills, motivation to use computers, and self-efficacy as current and future students was assessed. University preservice teachers taught a keyboard/computer skills curriculum developed specifically for this collaborative teaching and learning project in 10 1-hr-long sessions 2 times a week over a 5-week period. A series of 2 by 2 repeated measures analysis of variance showed achievement gains as measured by a survey instrument within the treatment group. This small, preliminary study supports the use of preservice teachers in the delivery of an individualized, computer-based program of instruction for at-risk students. 相似文献