在教学《小数和整数相乘》时,以学生的已有知识为起点,发现学生出现了思维障碍:有的已经淡忘,有的已经被刚学经验干扰。在对这一课的三次教学中各有收获,笔者进一步理解了奥苏伯尔所说的“影响学习的重要因素是学生已经知道了什么”。 When teaching “Multiplication of decimals and integers”, starting with the students’ prior knowledge, they found that students had trouble thinking: some had forgotten and some had just been disturbed by their experience. In the three lessons of this lesson have their own harvest, the author further understand what Ausubel said “an important factor affecting learning is what the students already know ”.