Teachers’ perceptions of assessments of their mathematical knowledge in a professional development course

The purpose of the project reported in this article was to evaluate how assessing teachers’ mathematical knowledge within a professional development course impacted from the teachers’ perspective their learning and their experience with the course. The professional development course consisted of a 2-week summer institute and the content focus was geometry. We had decided to assess the mathematical learning of the teachers during this professional development course for various accountability reasons, but were concerned about possible negative by-products of this decision on the teachers and their participation. Thus, we worked to design assessment in ways that we hoped would minimize negative impacts and maintain a supportive learning environment. In addition, we undertook this evaluation to examine the impacts of the assessment, which included homework, quizzes, various projects, and an examination for program evaluation. Seventeen grade 5–9 teachers enrolled in the course participated in the study by completing written reflections and by describing their experiences in interviews. We learned that while our original intent was “to do no harm,” the teachers reported that their learning was enhanced by the assessment. The article concludes by describing the various properties of the assessments that the teachers identified as contributing to their learning of the geometry content, many of which align with current recommendations for assessing and evaluating grade K-16 mathematics students.

浅析博客对大学生思想政治教育的影响及对策

博客作为一种新的个性化的网络个人信息管理工具,开启了大学生思想政治教育在网络时代发展的新的篇章,受到越来越多的教育者的关注。从博客的特点入手．分析博客带给大学生思想政治教育工作到来的机遇与挑战,探寻在博客背景之下思想政治教育的对策。     

The effect of peer feedback for blogging on college students' reflective learning processes

Reflection is an important prerequisite to making meaning of new information, and to advance from surface to deep learning. Strategies such as journal writing and peer feedback have been found to promote reflection as well as deep thinking and learning. This study used an empirical design to investigate the interaction effects of peer feedback and blogging on college students' reflective thinking skills and their learning approaches. Forty-four first- and second-year undergraduate students participated in the study. Students kept blogs each week throughout a whole semester. Two journals were sampled at the beginning and end of the semester for each student. A repeated measure one-way ANOVA suggested that students' reflective thinking level increased significantly over time; however, peer feedback was found to negatively affect students' reflective thinking skills. The result of the study suggests more carefully designed uses in the future.     

秦汉时期人的社会文化素质探析

随着秦汉大一统局面的形成,后来影响中国千百年的经济、政治、文化制度及政策得以建立并逐步完善。另外,大一统局面的形成,促进了民族融合,为汉民族的形成创造了有利条件。秦汉时期文化教育发达,科学技术进步,人的活动区域扩大,实践能力提高,民主意识萌芽,以"孝"为代表的道德素质成为人的素质的鲜明特点,人的社会文化素质呈现上升态势。     

高职院校内部管理体制改革的思考

在当前高职院校规模快速发展和专业建设不断深化的过程中,内部管理体制存在诸如权力过于集中,行政地位、部门作用过于显赫,教学和科研部门的中心地位不突出等弊端。管理体制和运行机制面临变革,需进一步分析高职院校院系两级管理体制权力架构,积极探索深化内部管理体制改革的有效途径。     

基于SWOT分析的西安会展旅游市场发展战略选择

运用SWOT分析法,分析了西安市发展会展旅游的优势、劣势、机遇和挑战,同时提出了新的市场环境下,西安市发展会展旅游的战略选择。     

高校基层党建机制创新与载体建设的探析

针对目前我国部分高校基层党建工作缺乏创新工作机制、基层党组织设置不灵活、党员教育管理方法单一等问题,从完善党建功能和创新党建载体两个方面提出增强高校基层党建凝聚力和战斗力的对策,认为在高校基层党组织中构建“1＋2”组织机制,可以有效提高基层党建的育人功能,巩固基层党组织的战斗堡垒作用。进而指出要焕发高校基层党组织的活力,必须从组织载体、活动载体和制度载体三个方面加强高校基层党组织建设。     

基于Tinyos的无线温湿度传感器网络系统设计和实现

集成了微机电(MEMS)系统、传感器技术、无线通信技术的无线传感器网络是一种全新的信息获取和处理方式,其应用前景非常广泛.设计和实现了无线温湿度传感器网络系统,其中包括硬件系统设计和Tinyos操作系统体系结构和应用程序的开发过程,给出了温湿度数据采集应用开发的要点.     

铝渣制备聚合氯化铝的研究

以铝型材碱洗废渣为原料,采用酸溶——聚合一步法工艺,制得符合行业标准的工业聚合氯化铝产品。推导得产品盐基度B与外加酸量nHY及产品Al2O3含量nAl之间的经验式B％=（1-nny／6nAl）＊100％,可用于产品设计和产品质量改进的指导。通过正交试验确定了适宜的制备工艺条件,每114g铝渣用浓盐酸83ml、酸浓度4mol／1、在80℃下反应3h。制得产品盐基度47．1％、Al2O3％11．2％、密度1．23g／cm^3。     

甲基叔丁基醚（MTBE）在水稻中的迁移转化规律及其对水稻性状影响的研究

通过露天水稻盆栽试验,模拟自然环境研究MTBE在水、土壤和水稻中的迁移转化规律及其对水稻性状影响。结果表明,MTBE在水中的溶解量远大于其在土壤中的吸附量,MTBE在水中的消失速率快于土壤中的消失速率;同时研究了水稻体内MTBE分布规律;另外研究了MTBE对水稻叶片中的光合色素、游离脯氨酸和丙二醛的含量的影响及对水稻籽粒质量的影响。