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Action research is a form of professional inquiry in which the teacher's role is seen as key to educational improvement. This paper describes methodologies developed by the Logo Action Research Collaborative – a national network linking 100 teachers at nine sites – that facilitate and support collaborative inquiry by teachers into their own teaching practices, in order to understand, improve, develop, and incorporate new forms of student assessment, teaching methods, and curriculum. The project focused on the Logo computer language, a powerful learning environment for problem‐solving and mathematical inquiry. The authors provide background information on action research as an evolving discipline. They identify three phases of a year‐long action research cycle, and describe key strategies developed by the project to support teachers in taking on a research frame of mind, identifying areas of concern, and undertaking and completing action research projects. The paper includes several illustrative examples of action research investigations undertaken by teachers, and demonstrates the benefits to the students and teachers involved. It closes by making a case for the potential contribution of action research to current educational reform initiatives and school restructuring.  相似文献   
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This study investigates school choice in a gentrified urban context and examines the ways in which school choice as rhetoric creates false perceptions, how school-choice policies can betray the very principle they espouse, and how choice (while sought after by many) can undermine community. As school choice continues to expand and gain traction politically, it is increasingly important to understand the effects it has on a variety of populations and how the rhetoric surrounding the policy does not correspond with the lived realities on the ground. This research borrows the concept from psychology and economics of “the paradox of choice” (Schwartz, 2004 Schwartz, B. (2004). The paradox of choice: Why more is less. New York, NY: Ecco. [Google Scholar]) and applies it to school choice to demonstrate some of the negative influences of choice on parents and their views of schooling. This research calls into question one of the major arguments for the expansion of school choice—that it provides all parents the opportunity to choose the best fit for their child—by demonstrating that in actual practice choice does not meet parents’ expectation that they are in control of their child’s educational options, regardless of their class background. In this case study the choice system results in a lack of agency, anger and hostility, discontent with schooling options, and an undermining of community connections. Although a number of families do believe they had a choice and were satisfied with their child's school options, or became staunch advocates for their local district schools, the choice landscape still creates tensions.  相似文献   
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A primary aim of the Chicago School Readiness Project was to improve teachers’ emotionally supportive classroom practices in Head Start-funded preschool settings. Using a clustered randomized controlled trial (RCT) design, the Chicago School Readiness Project randomly assigned a treatment versus control condition to 18 Head Start sites, which included 35 classrooms led by 94 teachers who served 602 children. Teachers in the treatment condition were invited to participate in behavior management training and their classrooms were visited weekly by mental health consultants who “coached” teachers as they implemented behavior management strategies. Estimation of hierarchical linear models revealed that the multi-component intervention provided statistically significant benefits: Head Start classrooms randomized to the treatment condition were found to have statistically significantly higher levels of positive classroom climate, teacher sensitivity, and behavior management than were classrooms in the control condition (with effect sizes ranging from d = 0.52 to 0.89). Discussion of these findings reflects on policy implications and future research.  相似文献   
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We tested a simple and compact device designed for manual resistance training in conditions of microgravity (Self-Powered Rope Trainer Duo (SPoRT Duo)) to increase muscle performance. Twenty-four participants (20.8 ± 2.1 years) were randomly assigned to a manual resistance group (n = 12) and a free-weight group (n = 12). Participants performed eight exercises (three sets; 8–12 efforts) either with free weights or the SPoRT Duo twice a week for 6 weeks. Maximal isometric force of trunk flexion, back extension and chest press increased (P at least 0.01, d at least 0.52) both in the manual resistance group (18.4% ± 15.0%; 32.7% ± 22.7%; 15.3% ± 9.7%) and free-weight group (18.0% ± 13.9%; 26.6% ± 28.9%; 13.3% ± 7.6%). The change in maximal isometric force of wide grip row in both groups (d at best 0.38) did not reach statistical significance (P at best 0.08). The squat one-repetition-maximum increased in the manual resistance group (29.8% ± 22.1%) and the free-weight group (32.4% ± 26.6%). Jump height, determined by a jump-and-reach test, increased in the free-weight group (9.8% ± 13.2%) but not in the manual resistance group (2.0% ± 8.5%). Manual resistance training was equally effective in increasing strength as traditional resistance training with free weights. This apparatus is a useful addition to current in-flight exercise systems.  相似文献   
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