Comparison of student performance using web and paper‐based homework in college‐level physics     

Scott W. Bonham  Duane L. Deardorff  Robert J. Beichner 《科学教学研究杂志》2003,40(10):1050-1071

Homework gives students an opportunity to practice important college‐level physics skills. A switch to Web‐based homework alters the nature of feedback received, potentially changing the pedagogical benefit. Calculus‐ and algebra‐based introductory physics students enrolled in large paired lecture sections at a public university completed homework of standard end‐of‐the‐chapter exercises using either the Web or paper. Comparison of their performances on regular exams, conceptual exams, quizzes, laboratory, and homework showed no significant differences between groups; other measures were found to be strong predictors of performance. This indicates that the change in medium itself has limited effect on student learning. Ways in which Web‐based homework could enable exercises with greater pedagogical value are discussed. © 2003 Wiley Periodicals, Inc. J Res Sci Teach 40: 1050–1071, 2003  相似文献   

Curious sex ratios and cytoplasmic genes     

Stephen J. Freeland  Laurence D. Hurst 《Resonance》1997,2(6):68-78

Evolutionary theory predicts that most populations should consist of roughly as many males as females. Recently, a variety of populations have been described which show very different proportions of the two sexes, especially in invertebrate species that contain individuals whose offspring are almost all female. Some of these instances can now be explained by the diverse actions of various ‘selfish’ elements residing in the cytoplasm of the individuals, which are transmitted exclusively through the female line. These instances of curious sex ratios exemplify an important principle: the fitness of genes, rather than of individuals, is the primary currency of evolution.  相似文献   

Choice behavior in transition: Development of preference in a free-operant procedure     

James E. Mazur  Theresa A. Ratti 《Learning & behavior》1991,19(3):241-248

Twenty acquisition curves were obtained from each of 8 pigeons in a free-operant choice procedure. Every condition began with a phase in which two response keys had equal probabilities of reinforcement, and, as a result, subjects’ responses were divided fairly evenly between the two keys. This was followed by a phase in which one key had a higher probability of reinforcement than the other, and the development of preference was observed. In all but a few cases, response proportions increased for the key with the higher probability of reinforcement. In most conditions, the two probabilities differed by .06, but the actual probabilities varied (from .16 and .10 in one condition to .07 and .01 in another). Development of preference for the key with the higher probability of reinforcement was slower when the ratio of the two reinforcement probabilities was small (.16/.10) than when it was large (.07/.01). This finding is inconsistent with the predictions of several different quantitative models of acquisition, including the kinetic model (Myerson & Miezin, 1980) and the ratio-invariance model (Horner & Staddon, 1987). However, the finding is consistent with a hypothesis based on Weber’s law, which states that the two alternatives are more discriminable when the ratio of their reinforcement probabilities is larger, and, as a result, the acquisition of preference is faster.  相似文献   

The developmental learning paradigm     

Anton E. Lawson 《科学教学研究杂志》1979,16(6):501-515

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Early Mathematical Growth: How to Support Young Children’s Mathematical Development     

Filiz Varol  Dale C. Farran 《Early Childhood Education Journal》2006,33(6):381-387

The purpose of this critical analysis was to investigate the young children’s sense of numerical magnitudes and the important attributes of classrooms where children in kindergarten and first grade are exposed to mathematics. This study aimed to offer guidelines that will assist teachers as they teach mathematics to children between the ages of five and seven.  相似文献   

“Good Morning, HAL-9000”… “Good Morning, Don”… A Primer on Speech Recognition Software     

Don E. Descy Ph.D.  Don E. Descy 《TechTrends》2000,44(3):4-6

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Predictors of College Attendance Patterns of Rural Youth     

Soo-yong Byun  Judith L. Meece  Charlotte A. Agger 《Research in higher education》2017,58(8):817-842

This study investigated patterns of college attendance using data from a nationwide and contemporary sample of 2112 rural youth. We found that more than half of rural youth attended two-year institutions at some point during their college career and about a fourth initially enrolled in a two-year college before enrolling in a four-year college. Results also revealed that parental education, college preparatory track and preparation experiences, and teacher expectations predicted students’ college attendance patterns. Our findings point to the importance of two-year colleges and highlight the influence of family characteristics and students’ schooling experiences in the postsecondary trajectories of rural youth.  相似文献   

The relation of parenting style to adolescent school performance   总被引：21，自引：0，他引：21  

S M Dornbusch  P L Ritter  P H Leiderman  D F Roberts  M J Fraleigh 《Child development》1987,58(5):1244-1257

This article develops and tests a reformation of Baumrind's typology of authoritarian, permissive, and authoritative parenting styles in the context of adolescent school performance. Using a large and diverse sample of San Francisco Bay Area high school students (N = 7,836), we found that both authoritarian and permissive parenting styles were negatively associated with grades, and authoritative parenting was positively associated with grades. Parenting styles generally showed the expected relation to grades across gender, age, parental education, ethnic, and family structure categories. Authoritarian parenting tended to have a stronger association with grades than did the other 2 parenting styles, except among Hispanic males. The full typology best predicted grades among white students. Pure authoritative families (high on authoritative but not high on the other 2 indices) had the highest mean grades, while inconsistent families that combine authoritarian parenting with other parenting styles had the lowest grades.  相似文献   

Handbook of Career Theory. Michael B. Arthur,Douglas T. Hall,and Barbara S. Lawrence (Eds.)     

Paul J. Hartung 《Counselor Education & Supervision》1991,31(2):139-141

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Dyslexia: Its phenomenology     

Roger E. Saunders 《Annals of dyslexia》1963,13(1):75-82

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