教师是新课改的实施主体,对一线教师而言,最重要的就是课堂教学。我结合自己对新课改的理解,结合教学实践谈一些看法与认识。一、低起点,融知识于符号中尝试:在常用数集的符号表示中,正整数集记作N+或N+,在教学过程中,一些细心的学生就有疑问:原本表示自然数集,在右上角或右下角分别添加+怎么就能表示正整数集呢?在日 Teacher is the implementation of the new curriculum reform, the front-line teachers, the most important is the classroom teaching. I combine my understanding of the new curriculum reform, combined with teaching practice to talk about some ideas and understanding. First, a low starting point, the integration of knowledge in the symbol try: In the common number set symbolic representation, set of positive integers recorded as N + or N +, in the teaching process, some careful students have questions: originally expressed natural number set in the upper right Corner or lower right corner, respectively, how can we add + positive integer set? In Japan