著名学者成尚荣先生说:“教从儿童‘学’的起点出发,可以使教学真正‘落地’;教从儿童‘学’的起点出发,端正了教学的逻辑起点。”要从学习起点的发现开始。起点不是一个定点,它是动态生成的。从一个起点出发,必将迎来一个新起点。《认识平行四边形》一课,课前,通过检测,发现学生对一组对边为水平方向的平行四边形有了充分的认识,所以,把难点定位在不同位置的变式上;课中,通过搭平行四边形,发现有学生搭出 Mr. Cheng Shangrong, a famous scholar, said: “Teaching starts from the starting point of children’s learning so that teaching can really ’fall’.” Teaching starts from the starting point of children’s learning and completes the logic starting point of teaching. “” The beginning of the discovery began. The starting point is not a fixed point, it is dynamically generated. Starting from a starting point, will usher in a new starting point. “Understanding Parallelogram” lesson, before class, through testing, we found that students have a full understanding of a group of parallelograms with horizontal edges. Therefore, we should locate the difficulty in the variations of different positions. In class, Take a parallelogram and found a student to take