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一、电教媒体的运用,可指导学生探索方法在数学教学中,抽象与具体、逻辑与直观是永恒的矛盾。太简单的例子不能说明问题,生动有趣的实例又因表达的困难而不易讲清,于是造成理性与感性、理论与应用的脱节。如和学生研究二次函数的增减性问题,这是一个难点问题,以往都是从静态角度去和学生分析,学生也因此容易走上只记结论不去真正理解函数增减性实质的误区,更不要说让学生去主动探索了,且讲授此知识点十分费时。
First, the use of audio-visual media can guide students to explore ways In mathematics teaching, abstract and specific, logical and intuitive is the eternal contradiction. Too simple examples can not explain the problem, vivid and interesting examples because of the difficulty of expression and not easy to clarify, thus creating the rational and emotional, theory and application of the disconnect. Such as students with the addition and subtraction of the quadratic function of the problem, which is a difficult problem in the past are from a static point of view and student analysis, students are therefore easy to embark on just to conclude that they do not really understand the essence of the function of addition and subtraction errors Not to mention let students take the initiative to explore, and teaching this knowledge point is very time-consuming.