Kbean:基于区块链的平台,创造一个新的艺术市场

正我们热爱艺术!艺术是只有人类可以创造且欣赏的罕见形式之一。然而,艺术行业却是一个相对封闭的行业,面临着诸多的挑战。例如:1.新兴艺术家很难打人市场;2.艺术品的评价与交易缺乏透明度,这阻碍了新的市场参与者进入;3.人们一般认为单个买家负担不起艺术作品的花费,事实也的确如此;4.艺术作品的出处和交易记录缺少透明度,因此,如果想"了解内幕",则这种活动进一步限制了市场活动。Kbean是一种技术解决方案,可以通过区块链     

Cultivating divergent thinking in mathematics through an open-ended approach

The purpose of this study was to develop a program to help cultivate divergent thinking in mathematics based on open-ended problems and to investigate its effect. The participants were 398 seventh grade students attending middle schools in Seoul. A method of pre- and post-testing was used to measure mainly divergent thinking skills through open-ended problems. The results indicated that the treatment group students performed better than the comparison students overall on each component of divergent thinking skills, which includes fluency, flexibility, and originality. The developed program can be a useful resource for teachers to use in enhancing their students’ creative thinking skills. An open-ended approach in teaching mathematics suggested in this paper may provide a possible arena for exploring the prospects and possibilities of improving mathematical creativity.     

Parent involvement: perceptions of recent immigrant parents in a suburban school district,Minnesota

The study aimed to examine the perceptions of immigrant parents regarding their school’s efforts to encourage three types of parent involvement: Parenting, Communicating, and Learning at Home. The sample includes 106 immigrant parents with children who were enrolled in English Language Learners programmes at 10 schools in a suburban school district in Minnesota, USA. The results showed that depending on their ethnicities, the children’s school levels and the father’s educational level, the perceptions of the parents were significantly different in terms of the “Parenting” and “Learning at Home” involvement types. Mother’s educational level was significantly correlated to the languages used at home and to their children’s academic achievement in English. Results indicated that schools should consider ethnic backgrounds and educational levels of parents, and languages used at home to instil as collaborations between immigrant parents and schools.     

The Net Effect

This study introduces the term "travelers" to describe programs that move from one broadcast network to another. Travelers represent a form of television recycling common to the television industry, which has used over three times as many travelers as spin-offs. This article examines and accounts for the history and use of travelers over a fifty-year period: their initial popularity with networks and sponsors in the 1950s their decline in the 1970s and 198Os, and their resurgence in the 1990s. Travelers have become an increasingly important television programming tool as broad- cast networks compete for market share.     

Effectiveness of Computer-Based Scaffolding in the Context of Problem-Based Learning for Stem Education: Bayesian Meta-analysis

Computer-based scaffolding plays a pivotal role in improving students’ higher-order skills in the context of problem-based learning for Science, Technology, Engineering and Mathematics (STEM) education. The effectiveness of computer-based scaffolding has been demonstrated through traditional meta-analyses. However, traditional meta-analyses suffer from small-study effects and a lack of studies covering certain characteristics. This research investigates the effectiveness of computer-based scaffolding in the context of problem-based learning for STEM education through Bayesian meta-analysis (BMA). Specifically, several types of prior distribution information inform Bayesian simulations of studies, and this generates accurate effect size estimates of six moderators (total 24 subcategories) related to the characteristics of computer-based scaffolding and the context of scaffolding utilization. The results of BMA indicated that computer-based scaffolding significantly impacted (g = 0.385) cognitive outcomes in problem-based learning in STEM education. Moreover, according to the characteristics and the context of use of scaffolding, the effects of computer-based scaffolding varied with a range of small to moderate values. The result of the BMA contributes to an enhanced understanding of the effect of computer-based scaffolding within problem-based learning.     

Elementary teachers' epistemological and ontological understanding of teaching for conceptual learning

The purpose of this study was to examine the ways in which elementary teachers applied their understanding of conceptual learning and teaching to their instructional practices as they became knowledgeable about conceptual change pedagogy. Teachers' various ways to interpret and utilize students' prior ideas were analyzed in both epistemological and ontological dimensions of learning. A total of 14 in‐service elementary teachers conducted an 8‐week‐long inquiry into students' conceptual learning as a professional development course project. Major data sources included the teachers' reports on their students' prior ideas, lesson plans with justifications, student performance artifacts, video‐recorded teaching episodes, and final reports on their analyses of student learning. The findings demonstrated three epistemologically distinct ways the teachers interpreted and utilized students' prior ideas. These supported Kinchin's epistemological categories of perspectives on teaching including positivist, misconceptions, and systems views. On the basis of Chi's and Thagard's theories of conceptual change, the teachers' ontological understanding of conceptual learning was differentiated in two ways. Some teachers taught a unit to change the ontological nature of student ideas, whereas the others taught a unit within the same ontological categories of student ideas. The findings about teachers' various ways of utilizing students' prior ideas in their instructional practices suggested a number of topics to be addressed in science teacher education such as methods of utilizing students' cognitive resources, strategies for purposeful use of counter‐evidence, and understanding of ontological demands of learning. Future research questions were suggested. © 2007 Wiley Periodicals, Inc. J Res Sci Teach 44: 1292–1317, 2007     

An investigation of experienced secondary science teachers' beliefs about inquiry: An examination of competing belief sets

The purpose of this study was to investigate the beliefs of six experienced high school science teachers about (1) what is successful science learning; (2) what are the purposes of laboratory in science teaching; and (3) how inquiry is implemented in the classroom. An interpretive multiple case study with an ethnographic orientation was used. The teachers' beliefs about successful science learning were substantively linked to their beliefs about laboratory and inquiry implementation. For example, two teachers who believed that successful science learning was deep conceptual understanding, used verification labs primarily to illustrate these concepts and used inquiry as a type of isolated problem‐solving experience. Another teacher who believed that successful science learning was enculturation into scientific practices used inquiry‐based labs extensively to teach the practices of science. Tension in competing beliefs sets and implications for reform are discussed. ? 2004 Wiley Periodicals, Inc. J Res Sci Teach 41: 936‐960, 2004.     

Capitalizing on advances in mathematics and k-12 mathematics education in undergraduate mathematics: An inquiry-oriented approach to differential equations

This paper provides an overview of the Inquiry-Oriented Differential Equations (IO-DE) project and reports on the main results of a study that compared students’ beliefs, skills, and understandings in IO-DE classes to more conventional approaches. The IO-DE project capitalizes on advances within mathematics and mathematics education, including the instructional design theory of Realistic Mathematics Education and the social negotiation of meaning. The main results of the comparison study found no significant difference between project students and comparison students on an assessment of routine skills and a significant difference in favor of project students on an assessment of conceptual understanding. Given these encouraging results, the theoretical underpinnings of the innovative approach may be useful more broadly for undergraduate mathematics education reform.