How to set up doubts is appropriate?
Lu Jiuyuan once said: "There is no doubt that if you are a student, doubts will make progress, small doubts will make small progress, and big doubts will make great progress." Therefore, it is very important to set up doubts and solve doubts. In mathematics activities, it is urgent to set up doubts, which can open children's minds and further guide children to complete the teaching goals preset by teachers. However, questions should have an appropriate orientation, aiming at children's age characteristics and development level, that is, "jumping to pick peaches", which is advocated by Soviet educator Vygotsky. In this activity, I effectively positioned the "jumping" distance of asking questions-operating materials from plane to three-dimensional. Before class, I found that the "cakes" on children's homework materials are all three-dimensional. I asked Shen, a very capable child in advance, and found that she was obsessed with where to start the three-dimensional "cake" and could not find the starting point. In view of this phenomenon, in the activity, I lowered my requirements and took out various centralized and regular papers before the group work, so that the children could be divided into two parts and start with a little doubt. Then I set up a "middle doubt" for the children to sum up the method of sharing equally-edge to edge, corner to corner, find a point, and finally set up a "big doubt" group to start sharing the three-dimensional cake equally. The first cake was demonstrated by a child and evaluated by peers. After the children mastered it, they did the last operation. The final surgical results show that except for some children with weak ability,
After class, I think, in fact, Lu Jiuyuan's questioning can be applied to all activities, and the key lies in how the teacher grasps the degree of questioning.