How LO can you GO?     

Mary Richardson  Paul Stephenson  John Gabrosek 《Teaching Statistics》2010,32(1):8-12

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Using Resampling to Compare Two Proportions     

W. Robert Stephenson  Amy G. Froelich  William M. Duckworth 《Teaching Statistics》2010,32(3):66-71

This article shows that when applying resampling methods to the problem of comparing two proportions, students can discover that whether you resample with or without replacement can make a big difference.  相似文献   

Identity formation of teacher–mentors: An analysis of contrasting experiences using a Wengerian matrix framework     

Tammy Kwan  Francis Lopez-Real 《Teaching and Teacher Education》2010

In order to understand the process of identity formation in a community of practice, Wenger (2002) proposes a matrix framework whereby three qualities (connectedness, expansiveness and effectiveness) are matched against three modes of belonging (engagement, imagination and alignment). In this paper we use this framework to analyse the experiences of two teacher–mentors and interpret how their identities are formed during the process of mentoring student–teachers. Factors that contribute significantly to the development of their identity include the school culture, the ‘personalities’ of the other community members, and the influence of other relevant communities of practice.  相似文献   

Effects of timing of signal indicating jump directions on knee biomechanics in jump-landing-jump tasks     

Mitchell L. Stephenson  Taylour J. Hinshaw  Haley A. Wadley  Qin Zhu  Margaret A. Wilson  Mark Byra 《Sports biomechanics / International Society of Biomechanics in Sports》2018,17(1):67-82

A variety of the available time to react (ATR) has been utilised to study knee biomechanics during reactive jump-landing tasks. The purpose was to quantify knee kinematics and kinetics during a jump-land-jump task of three possible directions as the ATR was reduced. Thirty-four recreational athletes performed 45 trials of a jump-land-jump task, during which the direction of the second jump (lateral, medial or vertical) was indicated before they initiated the first jump, the instant they initiated the first jump, 300 ms before landing, 150 ms before landing or at the instant of landing. Knee joint angles and moments close to the instant of landing were significantly different when the ATR was equal to or more than 300 ms before landing, but became similar when the ATR was 150 ms or 0 ms before landing. As the ATR was decreased, knee moments decreased for the medial jump direction, but increased for the lateral jump direction. When the ATR is shorter than an individual’s reaction time, the movement pattern cannot be pre-planned before landing. Knee biomechanics are dependent on the timing of the signal and the subsequent jump direction. Precise control of timing and screening athletes with low ATR are suggested.  相似文献   

Religious justification,elitist outcome: are religious schools being used to avoid integration?     

Tammy Harel Ben Shahar  Eyal Berger 《教育政策杂志》2018,33(4):558-583

Despite ongoing efforts to promote ethnic, racial and socio-economic integration, segregation continues to challenge education administrators and legal scholars. Privileged parents seeking to avoid integration employ various strategies such as attending private schools or buying houses in neighbourhoods with good school. This paper offers a combined empirical and legal research of another such strategy: the resort to religious schools. The research is conducted within one specific context, that of Israeli Religious State Schools. The empirical study examines whether “Torani” religious state schools (a category of religious schools that offer enhanced Jewish studies and a strict religious environment) induce socio-economic segregation. The findings indicate that “Torani” schools are indeed socio-economically segregated and serve children from higher socioeconomic class than regular religious state schools. It also shows that “Torani” schools are less reflective of their surroundings than regular religious state schools, and are more likely to be established by privileged parents in poor areas, where they are dissatisfied with the local state schools. The legal research offers an explanation of how legal regulation can determine whether religious schools will become a means for avoiding integration. Specifically, it points to three areas in which “Torani” schools are regulated differently than regular religious state schools – the rules regarding the establishment of new schools; the rules concerning school funding; and the rules concerning student enrolment – and argues that special treatment meant to protect religious interests is responsible for making “Torani” schools socially segregated.  相似文献   

The influence of an afternoon nap on the endurance performance of trained runners     

Anthony W. Blanchfield  Tammy M. Lewis-Jones  James R. Wignall  James B. Roberts 《European Journal of Sport Science》2018,18(9):1177-1184

The effectiveness of a nap as a recovery strategy for endurance exercise is unknown and therefore the present study investigated the effect of napping on endurance exercise performance. Eleven trained male runners completed this randomised crossover study. On two occasions, runners completed treadmill running for 30?min at 75% ?O_2max in the morning, returning that evening to run for 20?min at 60% ?O_2max, and then to exhaustion at 90% ?O_2max. On one trial, runners had an afternoon nap approximately 90?min before the evening exercise (NAP) whilst on the other, runners did not (CON). All runners napped (20?±?10?min), but time to exhaustion (TTE) was not improved in all runners (NAP 596?±?148?s vs. CON 589?±?216?s, P?=?.83). Runners that improved TTE after the nap slept less at night than those that did not improve TTE (night-time sleep 6.4?±?0.7?h vs. 7.5?±?0.4?h, P?r^{2 ?} =??0.76, P?=?.001). In runners that improved TTE, ratings of perceived exertion (RPE) were lower during the TTE on NAP than CON compared to runners that did not improve (?0.4?±?0.6 vs. 0?±?0, P?=?.05). Reduced exercising sense of effort (RPE) may account for the improved TTE after the nap. In conclusion, a short afternoon nap improves endurance performance in runners that obtain less than 7?h night-time sleep.  相似文献   

Delivery Method: Does it Matter? A Study of the North Carolina Developmental Mathematics Redesign     

Tammy J. Bishop  Nara Martirosyan  D. Patrick Saxon  Forrest Lane 《Community College Journal of Research & Practice》2018,42(10):712-723

In 2009, the North Carolina Community College System (NCCCS) began the process of redesigning developmental mathematics (DMA) courses. The first classes were offered in 2012 with final state implementation in fall 2013. The purpose of this study was to examine the subsequent gateway course success rates achieved by former DMA students in relation to the delivery method (i.e., teacher-centered, student-centered, and computer-centered) used in the redesigned North Carolina DMA courses. Students included in this study took a gateway math course and a developmental math course during the same or previous academic year. Students who participated in student-centered and computer-centered instruction in their DMA course had a statistically significant pass rate in subsequent gateway courses compared with students receiving teacher-centered instruction. Along with the findings, this paper discusses considerations for redesign, including the choice of delivery methods and instructional techniques, and recommendations for further research.  相似文献   

Youth Leaders' Perceptions of Commitment to a Responsibility-Based Physical Activity Program     

Tammy Schilling  Tom Martinek  Sarah Carson 《Research quarterly for exercise and sport》2013,84(2):48-60

This study extended Schilling's (2001) study by investigating program commitment among a larger (N = 12), older (M = 16.7 years), and more experienced (M = 5.96 years) sample of participants in the Project Effort Youth Leader Corps. Individual interviews elicited a greater number and specificity of themes. Program-related barriers included logistics, structure, and relationships, and personal-related barriers included perceived alternatives, personal characteristics, and “real-life” responsibilities. Similar to Schilling's (2001) earlier study, antecedents grouped under program environment, program structure, relationships, and personal characteristics. Participants also described outcomes in terms of behavior and emotional involvement but reported more themes related to leadership. Results are discussed in terms of consistencies and changes over time and implications for program development, expansion, and evaluation.  相似文献   

Australian preservice teachers and early reading instruction     

Linda Meeks  Jennifer Stephenson 《Australian Journal of Learning Difficulties》2020,25(1):65-82

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Elementary Teachers’ Selection and Use of Visual Models     

Tammy D. Lee  M. Gail Jones 《Journal of Science Education and Technology》2018,27(1):1-29

As science grows in complexity, science teachers face an increasing challenge of helping students interpret models that represent complex science systems. Little is known about how teachers select and use models when planning lessons. This mixed methods study investigated the pedagogical approaches and visual models used by elementary in-service and preservice teachers in the development of a science lesson about a complex system (e.g., water cycle). Sixty-seven elementary in-service and 69 elementary preservice teachers completed a card sort task designed to document the types of visual models (e.g., images) that teachers choose when planning science instruction. Quantitative and qualitative analyses were conducted to analyze the card sort task. Semistructured interviews were conducted with a subsample of teachers to elicit the rationale for image selection. Results from this study showed that both experienced in-service teachers and novice preservice teachers tended to select similar models and use similar rationales for images to be used in lessons. Teachers tended to select models that were aesthetically pleasing and simple in design and illustrated specific elements of the water cycle. The results also showed that teachers were not likely to select images that represented the less obvious dimensions of the water cycle. Furthermore, teachers selected visual models more as a pedagogical tool to illustrate specific elements of the water cycle and less often as a tool to promote student learning related to complex systems.  相似文献