探寻数学有效教学的课堂设计

正在新课改的背景下,数学课堂不仅注重知识的学习,更进一步关注学生综合能力的提升。针对不同阶段,不同的年级,以及面对不同的学生,都有不同的教学模式和教学方法。如何让数学课程设计创新有序,如何把数学课堂多元化,如何把数学知识恰如其分地融入其他元素,如何更好地把握不同类型的数学课,是教师长久以来不变的探究之路。比如上一节新课和一节章节的小结课,在课堂的整体布局上大致相同,但是课堂上的侧重点和教学方式全然不同,这需要老师不断地探索和更新。并且在信息技术发展迅猛的今时,课堂中贴     

结合学科建设谈思想品德教学新方案

二十一世纪是高速发展的时代,也是竞争激烈的时代。在这个背景下,思想品德学科所具备的人才培养、思想建设、人格塑造、观念强化等特点发挥着越来越重要的作用。在此基础上,提倡学科建设新观点,结合新观点浅谈教学新方案,让教学模式与时俱进,从而为我国教学事业做贡献,这将是教学发展过程中举足轻重的课题。     

Seismic behavior of steel reinforced ultra high strength concrete column and reinforced concrete beam connection

To investigate the seismic behavior of connections composed of steel reinforced ultra high strength concrete （SRUHSC） column and reinforced concrete （RC） beam, six interior strong-column-weak-beam connection specimens were tested subjected to reversal cyclic load. Effects of applied axial load ratio and volumetric stirrup ratio on ductility, energy dissipation capacity, strength degradation and rigidity degradation were discussed. It was found that all connection specimens failed in bending in a ductile manner with a beam plastic hinge. The ductility and energy dissipation capacity increased with the decrease of applied axial load ratio or increase of volumetric stirrup ratio. The displacement ductility coefficient and equivalent damping coefficient lay between those of steel reinforced ordinary concrete connection and those of reinforced concrete connection. The applied axial load ratio and volumetric stirrup ratio had less influence on the strength degradation and more influence on the stiffness degradation. The stiffness degraded sharply with the decrease of volumetric stirrup ratio or increase of applied axial load ratio. The experimental results indicate that SRUHSC column and RC beam connection exhibited better seismic performance and can provide reference for engineering application.