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John Orlando 《The American journal of distance education》2016,30(3):156-166
The emergence of simple video and voice recording software has allowed faculty to deliver online course content in a variety of rich formats. But most faculty are still using traditional text comments for feedback to students. The author launched a study comparing student and faculty perceptions of text, voice, and screencasting feedback. The results provide some interesting insights into the advantages and disadvantages of different forms of feedback. The author finishes with best practices for providing screencasting feedback to students. 相似文献
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Joanne Orlando 《Technology, Pedagogy and Education》2013,22(1):33-44
With the introduction of Information and Communication Technologies (ICT) into schools came the expectation that teachers would adopt ICT and change their practices in particular ways. Research indicates that teachers have not changed in the ways expected. Suggested in this paper is that limitations in current research methodologies documenting change in teachers' practices are restricting thorough examination of change in teachers' practices mediated by ICT. This paper reports on the design of a study aimed at investigating teachers' practices from an alternative position from the current research. The research design is a grounded, longitudinal, qualitative study using assorted analysis for the collection and interpretation of the data. This involves a combination of secondary analysis of archive data and collection and analysis of primary data. Participants were able to retrospectively describe and understand their own archived and new data, in interviews and observations. This paper focuses on ways this research design supported examining teachers' practices as including a number of dimensions and the way these dimensions were influenced by the context in which they were situated. Also, the ways this research design provided a means for examining the changes that developed from the teachers' own narratives. This gave some insight into the ways the teachers' understood the changes in their own practices. Examining change from this perspective supports understanding of how and why changes in teaching practices mediated by ICT occur or don't occur. It also contributes to examining the bigger phenomenon of ICT and the long‐term impact it is having on teaching practices. 相似文献
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Lang HG Biser E Mousley K Orlando R Porter J 《Journal of deaf studies and deaf education》2004,9(2):189-201
Seventy-three deaf college students completed a survey examining perceptions about tutoring outcomes and emphases, characteristics of tutors, and responsibilities associated with learning through tutoring. The comparisons revealed that while baccalaureate and sub-baccalaureate students have many similar perceptions about tutoring, there are also some striking differences. In particular, as compared to the sub-baccalaureate students, baccalaureate students have a stronger preference for focusing on course content and for working with tutors who actively involve them during the tutoring sessions. In addition, baccalaureate students prefer to decide the focus of the tutoring themselves while sub-baccalaureate students tend to leave the decision to the tutor. The results of the analyses with three scales measuring perceptions of tutoring dimensions are summarized and recommendations for the selection and preparation of tutors, as well as for future research, are provided. 相似文献
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Dianne Chambers Phyllis Jones Donna McGhie‐Richmond Michael Riley Sarah May‐Poole Ann Marie Orlando Orhan Simsek Catherine Wilcox 《Journal of Research in Special Educational Needs》2018,18(2):73-82
This project explored how iPads were being used in a range of K‐12 schools to support the learning of students with a range of learning support needs. Groups of teachers (and other professionals) from the USA, Canada, Australia and the UK were invited to complete an online survey focused on the use of iPads in their classrooms, perspectives of their skill level, and how their school and school districts support the use of iPads. The survey focused on iPad use in classrooms (curriculum and skills); teachers’ skill levels; whether iPads are addressed in the Individualised Education Program (IEP); the systemic support for the iPads; and the perceived benefits and barriers. The results reveal that respondents are using iPads across many areas of the curriculum, which affirms the research in the emerging literature base. However, there are teacher reported differences in the manner and scope of iPad use in the classrooms and also the integration of the iPad in the IEP. The research also highlights variability in reported skill level for the iPad and an increased need for enhanced systemic support, such as training, funding, technical support and administrative support for the use of the iPad as a pedagogical tool. 相似文献
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Thais Barbosa Monica Carolina Miranda Ruth F. Santos Orlando Francisco A. Bueno 《Reading and writing》2009,22(2):201-218
One of the most usual flaws that lead to literacy disability regards cognitive difficulties and alterations some children
present in the literacy process. Many studies have found alterations in phonological processing, more specifically in phonological
working memory (PWM) and phonological awareness (PA). Therefore, our aim was to identify alterations in skills of phonological
working memory, phonological awareness and language (semantic, syntactic and phonological aspects) of Brazilian children with
literacy disabilities (age 7–8). They were divided into two groups: (1) Group of Normal Literacy (NL); and (2) Group With
Literacy Disabilities (LD). The evaluation comprised tests that assessed general cognitive functions and the skills at stake.
The LD presented a poorer performance than the NL in the skills of PWM, PA and language aspects. The factor analysis showed
that these skills prevailed in differentiating the groups. Thus, children with literacy disabilities presented deficits in
phonological processing and language. These deficits seem to be a result of alterations of the phonological representations
and poor language skills that are prior to the literacy period. Consequently, we believe that the early identification of
these alterations can be very useful for the prevention of future literacy problems. 相似文献
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Science & Education - In this article, we draw upon the Conceptual Profile Theory to discuss the negotiation of meanings related to the energy concept in an 11th grade physics classroom. This... 相似文献
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This paper proposes a sensorless fault-tolerant control strategy solving the tracking problem of the maximum delivered power characteristic for a wind energy conversion system equipped with a permanent magnet synchronous generator. A previously published control scheme ensuring the maximum power efficiency of the wind turbine, not requiring feedback information about rotor speed and position, and about wind velocity, is here extended to make the control scheme fault-tolerant with respect to possible electrical faults affecting the equations of the permanent magnet synchronous generator (PMSG) in the original (α, β) frame. The control law is based on a number of interconnected nonlinear observers. Closed loop asymptotic vanishing of the observation errors is proved. The proposed control solution has been validated on the National Renewable Energy Laboratory (NREL) 5-MW three-blade wind turbine model. 相似文献
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