The effects of computer-assisted instruction on number combination skill in at-risk first graders     

Fuchs LS  Fuchs D  Hamlet CL  Powell SR  Capizzi AM  Seethaler PM 《Journal of learning disabilities》2006,39(5):467-475

The purpose of this pilot study was to assess the potential for computer-assisted instruction (CAI) to enhance number combination skill among children with concurrent risk for math disability and reading disability. A secondary purpose was to examine the effects of CAI on spelling. At-risk students were assigned randomly to math or spelling CAI, which they received in 50 sessions over 18 weeks. Acquisition and transfer effects were assessed. The results indicated that math CAI was effective in promoting addition but not subtraction number combination skill and that transfer to arithmetic story problems did not occur. Spelling CAI effects were reliable on acquisition and transfer spelling measures, with small to moderate effect sizes on transfer to reading measures. These results provide the basis for additional work with larger samples.  相似文献   

Too much,too soon? A critical investigation into factors that make Flipped Classrooms effective     

Darren P. M. Comber  Mirjam Brady-Van den Bos 《高等教育研究与发展》2018,37(4):683-697

The Flipped Classroom (FC) method is used widely in higher education, with studies claiming various benefits. However, to date, little work has focused on what makes FCs effective for student learning. This study presents data collected from interviews with 14 UK-based undergraduate students, investigating their perceptions of participating in a series of FC sessions. Findings indicate that the FC format discouraged a significant number of students from attending. However, students who did attend the flipped classes reported valuing the resultant learning opportunities and enjoying the experience. This study sheds light on the learning process within the FC. Challenges in implementing the FC were highlighted both by students who attended and by those who did not. We conclude that implementing the FC should not be undertaken lightly or be seen as a quick fix; at minimum, it requires staff willingness and opportunities for engagement and peer learning.  相似文献   

Bolt-holes and breathing spaces in the system: On forms of academic resistance (or,can the university be a site of utopian possibility?)     

Darren Webb 《Review of Education, Pedagogy & Cultural Studies》2018,40(2):96-118

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Desulphurization of coke by air     

Alfred R. Powell 《Journal of The Franklin Institute》1923,195(6):867-868

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Effects of movement velocity and training frequency of resistance exercise on functional performance in older adults: a randomised controlled trial     

Darren L. Richardson  Michael J. Duncan  Alfonso Jimenez  Paul M. Juris  Neil D. Clarke 《European Journal of Sport Science》2019,19(2):234-246

Objectives: To investigate the effects that high-velocity, low-load (HVLL) and low-velocity, high-load (LVHL) resistance exercise, performed once or twice-weekly, have on indices of functional performance (primary outcome), maximal strength, and body composition (secondary outcomes) in older adults.

Methods: In a randomised, controlled, multi-armed, parallel design, 54 moderately-highly active, but resistance exercise naïve older adults (aged 60–79 years), attended baseline and post-10-week intervention assessment sessions. Physical and functional assessments were completed, and predicted one-repetition maximums (1-RM) were obtained for eight exercises. Participants were then randomised into one of five conditions: HVLL once-weekly (HVLL1: n?=?11) or twice-weekly (HVLL2: n?=?11), LVHL once-weekly (LVHL1: n?=?10) or twice-weekly (LVHL2: n?=?11), no-exercise control condition (CON: n?=?11). The HVLL conditions completed 3 sets of 14 repetitions at 40% 1-RM and the LVHL conditions, 3 sets of 7 repetitions at 80% 1-RM. In total, 50 participants completed all testing and were included in analyses.

Results: Only LVHL2 improved 30-sec chair stand performance (p?=?.035; g?=?0.89), arm curls (p?=?.011; g?=?1.65) and grip-strength (p?=?.015; g?=?0.34) compared to CON. LVHL2 improved maximal strength compared to CON for 7/8 exercises (p?p?Conclusion: Possibly due to the lower intensity nature of the HVLL conditions, LVHL, twice-weekly was most beneficial for improving functional performance and strength in moderately-highly active older adults. Therefore, we recommend that exercise professionals ensure resistance exercise sessions have sufficient intensity of effort and volume, in order to maximise functional performance and strength gains in older adults.  相似文献   

Motor unit firing frequency of lower limb muscles during an incremental slide board skating test     

Tatiane Piucco  Rodrigo Bini  Masanori Sakaguchi  Fernando Diefenthaeler  Darren Stefanyshyn 《Sports biomechanics / International Society of Biomechanics in Sports》2017,16(4):540-551

This study investigated how the combination of workload and fatigue affected the frequency components of muscle activation and possible recruitment priority of motor units during skating to exhaustion. Ten male competitive speed skaters performed an incremental maximal test on a slide board. Activation of six muscles from the right leg was recorded throughout the test. A time-frequency analysis was performed to compute overall, high, and low frequency bands from the whole signal at 10, 40, 70, and 90% of total test time. Overall activation increased for all muscles throughout the test (p < 0.05 and ES > 0.80). There was an increase in low frequency (90 vs. 10%, p = 0.035, ES = 1.06) and a decrease in high frequency (90 vs. 10%, p = 0.009, ES = 1.38, and 90 vs. 40%, p = 0.025, ES = 1.12) components of gluteus maximus. Strong correlations were found between the maximal cadence and vastus lateralis, gluteus maximus and gluteus medius activation at the end of the test. In conclusion, the incremental skating test lead to an increase in activation of lower limb muscles, but only gluteus maximus was sensitive to changes in frequency components, probably caused by a pronounced fatigue.  相似文献   

On brutal culture     

Darren Umney  Dave O'Brien  Fabian Muniesa  Liz Moor  Liz McFall 《Journal of Cultural Economy》2017,10(6):556-568

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Exposing Privilege and Racism in The Great White North: Tackling Whiteness and Identity Issues in Canadian Education     

Darren E. Lund  Paul R. Carr 《Multicultural Perspectives》2013,15(4):229-234

As social justice–oriented teachers and teacher educators, it can seem as if we are fighting a losing battle against neoliberal education policies designed to disrupt and dismantle our field. In this article we draw upon traditions of critical race theory, counterstorying, and critical hope to examine the complex realities of contemporary teacher education and envision an alternate reality in which our profession develops and thrives. To do so, we first present a series of autoethnographic critical case studies that highlight dilemmas of practice. We then invite readers to examine each case through multiple lenses, as they grapple with the complexities of a visionary path forward. In so doing, we offer tools for critical professional development that articulate, deconstruct, and reimagine social justice–oriented teacher education and activism in this changing landscape. We close with recommendations to increase our collective capacity as social justice teacher educators, placing a central emphasis on the need for community, critical professional development, and hope.  相似文献   

Drivers and barriers to the utilisation of gamification and game-based learning in universities: A systematic review of educators' perspectives     

Danielle Lester  Gregory J. Skulmoski  Darren P. Fisher  Vishal Mehrotra  Iris Lim  Alexander Lang  Justin W. L. Keogh 《British journal of educational technology : journal of the Council for Educational Technology》2023,54(6):1748-1770

While gamification and game-based learning have both been demonstrated to have a host of educational benefits for university students, many university educators do not routinely use these approaches in their teaching. Therefore, this systematic review, conducted using the PRISMA guidelines, sought to identify the primary drivers and barriers to the use of gamification and game-based learning by university educators. A search of multiple databases (Web of Science, Scopus and EBSCO (Business Source Complete; ERIC; Library, Information Science & Technology Abstracts)) identified 1330 articles, with 1096 retained after duplicates were removed. Seventeen articles (11 quantitative, two mixed-methods and four qualitative) were included in the systematic review. The primary drivers described by the educators that positively influenced their gamification and game-based learning usage were their beliefs that it encourages student interactions and collaborative learning; provides fun and improves engagement; and can easily be used by students. Alternatively, the university educators' major barriers included a lack of time to develop gamification approaches, lack of proven benefits and classroom setting issues. Many of these and other less commonly reported drivers and barriers can be categorised as attitudinal, design-related or administrative in nature. Such categorisations may assist university educators, teaching support staff and administrators in better understanding the primary factors influencing the utilisation of gamification and game-based learning and develop more effective strategies to overcome these barriers to its successful implementation.

Practitioner notes

What is already known about this topic

• Gamification and game-based learning may have many benefits for university students.
• The majority of university educators do not routinely use gamification and game-based learning in their teaching.

What this paper adds

• University educators' major drivers that positively influence the use of gamification and game-based learning include their perceptions that it encourages student interactions and collaborative learning, provides fun and improves engagement and can easily be used by students.
• University educators' major barriers that negatively influence the use of gamification and game-based learning include their perceptions of a lack of time to develop gamification approaches, lack of proven benefits and classroom setting issues.
• These drivers and barriers may be classified as attitudinal, design-related and administrative, with these categories providing a useful way for universities to develop strategies to better support educators who wish to use these approaches in their teaching.

Implications for practice and policy

• Attitudinal factors such as university educators' intention to use gamification and game-based learning are influenced by a host of their perceptions including attitude, perceived usefulness and ease of use.
• A range of design-related and administrative barriers may need to be overcome to increase the use of gamification and game-based learning in the university sector.

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Exploring academic and cognitive skills impacting retention and acquisition of word-problem knowledge gained during or after intervention     

Xin Lin  Sarah R. Powell 《Child development》2023,94(6):e362-e376

In the present study, we investigated the impact of a word-problem intervention in retention and acquisition of knowledge after the intervention ended. We based analyses upon Grade 4 students experiencing mathematics difficulty (average age at pretest = 8.77) who received one of two variants of a word-problem intervention (with [n = 111] vs. without [n = 110] embedded pre-algebraic reasoning instruction) and students within a business-as-usual condition (BaU [n = 127]) separately. Findings revealed that students who received the intervention not only tended to retain less, but they also showed more active knowledge acquisition after the intervention ended. Furthermore, word-problem intervention altered the contributions of some prior knowledge and skills on both retention and acquisition.  相似文献