教育精准扶贫背景下轮岗教师专业引领之困境及其化解

轮岗教师专业引领指凭借轮岗教师的专业领导力,引领帮扶学校教育理念、课程教学以及教育科研的变革,以促进帮扶学校教师专业发展,培育帮扶学校内生性发展力量,实现薄弱学校精准脱贫。这与旨在从根源上帮助贫困对象脱贫并阻断贫困代际传递的教育精准扶贫理念相契合。然而,在教育实践中,轮岗教师专业引领却遭遇了轮岗教师观念失衡与专业引领胜任力不足,帮扶学校支持性环境与内生性力量缺失,管理部门信息交流平台缺失与制度性保障不到位的困境。化解轮岗教师专业引领困境,需要关注轮岗教师能力精进和角色认同,重建帮扶学校自我变革的主体角色,完善政策导引与制度设计,精准推进轮岗扶贫实践。     

儿童视空间表象能力发展研究综述

儿童的视空间表象能力是儿童空间能力和认知发展的重要指标。文章在对表象实质进行明确界定的基础上，就目前已有关于儿童视空间表象能力发生、发展的一般趋势、心理旋转能力的发展以及视空间表象能力的影响因素等方面的研究进行了综述，以此为进一步研究儿童视空间表象能力提供借鉴。     

一个由数学概念表象引起的错误

本文利用认知科学原理对美国ETS的一道测试题错误答案进行分析 ,提出在数学学习中要正确处理好数学概念表象与定义之间的关系 ,并给出问题的解答及推广     

一类碳纤维手性材料的微波性能研究

利用微波圆波导法在8.5～11.0 GHz范围内测量了Fe3O4聚苯胺复合基体碳纤维手性材料的旋波性、圆二色性,计算出手性材料和非手性基体材料的自由空间短路反射系数,对这些物理性能受基体中浓度的影响作了分析,给出了一种手性材料设计参数.     

应用微机模块控制小直流电机的转速

介绍了采用微机数模转换器接口技术实现对小直流电机转速控制的实验方案,并对实验结果进行了 讨论.     

A case study of third grade students’ perceptions of the station rotation blended learning model in the United States

The purpose of this case study was to explore the experiences of 31 third graders who experienced learning in a Station Rotation blended learning setting over the period of one semester in the United State. These students participated in student focus group interviews and completed student questionnaires during the middle and the end of the semester. The student focus group interviews were first transcribed and coded. The students’ responses from the questionnaires were then coded and compared with the findings from the student focus group interviews. The results revealed five positive themes (variety of activities, technology, learning, fun, and getting help) and two negative themes (challenging work and technology). These emerged themes from the student focus interviews and the student questionnaires explain the perceptions the students had about the Station Rotation blended learning model. Finally, discussion for current study as well as recommendations for future research were provided.     

Āryabhata and axial rotation of Earth

Āryabhata (born 476 CE) is regarded as a pioneer of mathematical astronomy in ancient India. In this three-part article, I shall discuss one important contribution of Āryabhata in astronomy involving the least technical background —the principle of axial rotation (Part 1) and computations on the sidereal day (Part 2). Portions of 4 verses, pertaining to Earth’s rotation, from his famous treatise Āryabhatīya will be quoted. In Part 3, I shall give a brief historical account on the concept of axial rotation of Earth.     

地转偏向力的数学分析

分析了物体在地球表面作水平面运动或非水平面运动时 ,所受到的地转偏向力 f P 的大小 ;除赤道上作非水平面运动外 ,地转偏向力都可用 f P=2 mωv1sin表达 ,其中 v1 是物体在水平面内的运动速度 ,或是非水平面内的运动速度 v在水平面内的分量的大小 (v的另一个分量须平行于 )。赤道上作非水平面内运动的物体所受的地转偏向力并不等于零。     

因子分析模型在三产水平研究中的应用

对反映三产水平的19个观测变量建立因子分析模型,以最少因子刻画预期信息量为方向,以方差贡献为尺度,构造了4个具有代表性的公共因子,并通过载荷因子矩阵的旋转予以合理的命名解释,进一步利用公共因子的信息对我国30个省市的三产水平作了综合性评估,结论支持国家大力开发西部的政策倾向。