笔者曾经读过一个小故事,题目是《被斥责的勤奋》。讲的是现代原子物理学的奠基人卢瑟福斥责他一个整天埋头做实验的学生。他说,很多时候人们宁可让岁月淹没在仿佛很有价值的忙碌中,却极不情愿拿出时间进行思考,以至于思维总是在低水平的层次上徘徊,最终一无所获。王荣生教授认为思维是需要“抓手”的。因此,我们在教学中要设计思维的抓手。下面是于永正老师的《“番茄太阳”》(苏教版四年级下册) I have read a little story, the title is “being reprimanded diligence.” Talking about the founder of modern atomic physics, Rutherford, denounced him as an experiment student all day long. Many times, he says, people would rather overwhelm the years of valuable busyness than with the slightest willingness to take the time to think so much that thinking always lingered at a low level and ultimately nothing. Professor Wang Rongsheng think that thinking is the need “gripper ”. Therefore, we should design the starting point of thinking in teaching. The following is in Yong Zheng teacher’s “” tomato sun “” (Sujiao version of the fourth grade)