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概念是思维的基本单位,数学概念是抽象中的抽象.但在日常教学中,以知识为本位,在学生未理解概念的情况下匆匆运用概念的现象很常见.如我们在教学函数概念时常采见的教学.教学过程再现:环节一:常量与变量的引入教师:呈现情境(从甲地到乙地,坐在匀速的列车上,小明、小丽和小华谈论着车速、路程和时间,谈论着数量的变化和位置的变化.小丽:列车行驶的速度不变.小明:甲乙两地的路程不变.小亮:列车行驶的时间不断的变化.小华:列车距甲、乙两
Concept is the basic unit of thinking, mathematical concepts are abstractions in abstraction, but in everyday teaching, knowledge-based, it is not uncommon for students to use concepts in a hurry without understanding the concept.As we often take in the concept of teaching functions See teaching. Reproduction of teaching process: a link: the introduction of constants and variables Teachers: the presentation of the situation (from A to B, sitting on a uniform train, Xiao Ming, Mary and Xiao Hua talking about speed, distance and time, Talk about the number of changes and changes in location. Mary: the same speed of the train. Xiao Ming: A two places of the same distance. Xiao Liang: the train driving time changes. Xiaohua: train A, B