Using the web to encourage student-generated questions in large-format introductory biology classes

Students rarely ask questions related to course content in large-format introductory classes. The use of a Web-based forum devoted to student-generated questions was explored in a second-semester introductory biology course. Approximately 80% of the enrolled students asked at least one question about course content during each of three semesters during which this approach was implemented. About 95% of the students who posted questions reported reading the instructor's response to their questions. Although doing so did not contribute to their grade in the course, approximately 75% of the students reported reading questions posted by other students in the class. Approximately 60% of the students reported that the Web-based question-asking activity contributed to their learning of biology.     

Teachers' education, classroom quality, and young children's academic skills: results from seven studies of preschool programs

In an effort to provide high-quality preschool education, policymakers are increasingly requiring public preschool teachers to have at least a Bachelor's degree, preferably in early childhood education. Seven major studies of early care and education were used to predict classroom quality and children's academic outcomes from the educational attainment and major of teachers of 4-year-olds. The findings indicate largely null or contradictory associations, indicating that policies focused solely on increasing teachers' education will not suffice for improving classroom quality or maximizing children's academic gains. Instead, raising the effectiveness of early childhood education likely will require a broad range of professional development activities and supports targeted toward teachers' interactions with children.     

Income is not enough: incorporating material hardship into models of income associations with parenting and child development

Although research has clearly established that low family income has negative impacts on children's cognitive skills and social-emotional competence, less often is a family's experience of material hardship considered. Using the Early Childhood Longitudinal Study, Kindergarten Class of 1998-1999 (N=21,255), this study examined dual components of family income and material hardship along with parent mediators of stress, positive parenting, and investment as predictors of 6-year-old children's cognitive skills and social-emotional competence. Support was found for a model that identified unique parent-mediated paths from income to cognitive skills and from income and material hardship to social-emotional competence. The findings have implications for future study of family income and child development and for identification of promising targets for policy intervention.     

承德农业生态系统分析

承德市农业生态系统尚未摆脱传统农业模式,无偿利用的环境资源能值较高,经营粗放,生产效率不高,但生产潜力巨大。承德农业生态系统的表土损失率不高,比河北其它各市的土壤保持价值量都要大,这对于作为京津水源供应地和生态屏障地来说,则具有非常重要的意义。     

教师教育重心后移:动因与走向

教师教育由职前为重向职后为重转移成为一种新趋势。在实践转向的新潮流中逐步形成了教师教育新中心。教师本位的确立是教师教育实践化转向的内在要求,以课为本的研修是教师专业发展的立基点,遵循教育实践的内在逻辑是教师教育改革生命力的保证,找回教育情景是教师教育实践化的具体体现。     

电子设计综合实训教学体系的改革与实践

电子设计综合实训是高等学校以工艺性和实践性为主的重要实践教学环节,注重提高学生的动手能力和工程素质.介绍了电子设计综合实训教学体系及其实施方法的研究,在实践教学中贯穿模块化和层次化的教学理念,引入现代主流电子工艺,辅以多媒体教学手段,完善实训考核机制.通过以上实践,对电子设计综合实训的发展和创新模式进行了研究和探讨.     

基于云计算的数据中心虚拟机管理平台的设计

随着数字化校园和绿色校园的深入开展,校园网各项业务逐渐自动化和集成化。大连理工大学基于VMware虚拟化技术构建了安全高效的数据中心,并对校内各部门提供虚拟机服务。然而在虚拟机申请和管理维护过程中涉及大量人工操作,这构成了数据中心管理瓶颈。基于云计算思想设计了虚拟机管理平台,并以Web服务虚拟机申请为例介绍了该平台的功能。该管理平台对提高虚拟机管理效率有重要意义。     

Brief Report on PROSPER Academic Outcomes: Extended Model of Crossover Effects on Young Adult College Success

This study examines crossover effects of adolescent substance misuse preventive interventions on academic success in college. It evaluates pathways of influence on college grades, via effects on school engagement, problem-solving skills, and substance misuse in high school. Data were collected as part of an Randomized Controlled Trial (RCT) evaluating a multicomponent intervention conducted in 28 school districts with middle school students. At age 19, study participants (N = 1,488) enrolled in college reported on college grades. The model fit the data, supporting hypothesized pathways of intervention impacts. Inclusion of a significant direct effect on college grades further improved model fit. Results support the potential for universal substance misuse preventive interventions delivered by community partnerships during middle school to yield effects on long-term academic success.     

Literacy,languages and development in Africa: a policy perspective

International Review of Education - In the multilingual environments of Africa, national literacy policies vary in terms of the attention they give to the roles and purposes of local, national and...