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一、问题的提出新课引入是一个老生常谈的话题,也是一个至关重要的教学环节,有着承前启后、激发兴趣、引入正题的作用.尽管很多教师对于新课引入的方式、方法和种类了如指掌,甚至有着深刻的认识及丰富的经验.但在实际教学中,对同一节课却有很多不同的引入方式,其教学效果也大相径庭.下面就针对三位授课教师在一次“同课异构”活动中的不同引入,谈谈自己的一点感受.(注:所讲课例为北师大版新教材必修⑤“3.1基本不等式”)二、三个引入片断分析片断一探究1.播放儿歌“大风车”
I. Introduction of Problems The introduction of new courses is a common topic and also a crucial teaching link with the function of predecessors, inspiring interest and introducing the theme. Although many teachers are familiar with the ways, methods and types of introduction of new courses and even Have a profound understanding and rich experience.But in the actual teaching, there are many different ways to introduce the same lesson, its teaching effect is very different.After three teachers for the following in a (Note: The lectures for the Beijing Normal University version of the new textbook compulsory ⑤ “3.1 Basic Inequality ”) Two or three introduced the fragment analysis of a study 1. Play Children’s song “windmill ”