有机立体化学分子构型教学中的几点做法

用 R,S构型命名法描述手性分子的绝对构型教学是大学化学教学的一个难点和重点。探讨了应用直接观察法、计算法、手模型法来确定分子的 R,S构型命名。

函数思想主题教学的意涵建构与构型分析

从函数思想的文化源流、价值意蕴及内涵导向入手,构筑以教学要素、知识结构、心理结构、思维范式为支点的函数主题教学结构。采用文本分析和案例法,以发展、辩证、动态的视角分析了函数思想教学过程中的几重关系,构建了系统化、智能化、结构化的函数思想教学观。函数思想的源流经历了不断精练、深化及丰富的动态发展过程,既显示了哲学的辩证思维,又体现了数学的抽象思维。在思想方法应用上,它凸显了模型法、构造法、计算法、映射法等关键特征。运用多元化视角建构了三种以函数思想为主题的教学构型,以此促进学生更好地理解函数概念、函数知识以及函数思想内涵与应用过程,从而搭建学生科学合理的数学认知结构。

CR THEORY AND RHETORICAL DIFFERENCES BETWEEN CHINESE AND ENGLISH WRITING

CR theory focuses on the study of academic or professional writing across different cultural settings. One recurring question of CR theory in the Chinese ESL context is whether the rhetorical differences in organization, modeling, and syntax between Chinese and English writing indeed exist, and if so how they affect ESL writing. Through examining the controversies surrounding these rhetorical differences along with a brief review of the development of CR theory and pedagogical implications, this paper contends that the study of CR theory has exerted beneficial influences on L2 writing.