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一、由课例引发的班班通教学有效性思考有这样的一节小学数学班班通观察课让我反思良久。一位教师在教学“长方形和正方形的特征”时设计如下内容:班班通呈现魔术师刘谦拿着长方形的报纸准备变魔术,教师这时要求学生每人拿出一张长方形纸,量一量、折一折,象刘谦变魔术那样,一起来探究长方形的特征,研究一下它的身上隐藏着什么秘密!根据提示,学生们都拿出课前准备好的长方形纸,有的量,有的折,甚至有的学生拿出了小剪刀,做起了剪纸。一会功夫,折出三角形图案的,做成小纸
First, the classes triggered by the class Ban Tong effective teaching of thinking there is such a section of primary school mathematics class observation class led me to reflect a long time. A teacher in the teaching of “the characteristics of rectangular and square” designed the following content: Class Ban Bang magician Liu Qian took a rectangular newspaper ready to change magic, the teacher then asked the students to come up with a piece of rectangular paper, the amount of A volume, a discount, like Liu Qian magic, together to explore the characteristics of the rectangle, to study what it is hidden in the body! According to the tips, students are out pre-class prepared rectangular paper, Some fold, and even some students took out a small scissors, started a paper-cut. For a while, folded triangle pattern, made of small paper