During the activity, the children came up with many ways to transform into trapezoids. However, due to the lack of recording, the good methods among the children cannot be communicated and shared well, and the children cannot feel the same. There are different ways to transform the graphics into trapezoids. I feel that due to my adjustments in teaching, I did not achieve the predetermined teaching goals. If when children encounter difficulties, I will persist and let the children who can record record themselves, and the teachers who cannot record will give certain help. In this way, not only can the teaching goals be better accomplished, but also the abilities of children at different levels can be improved. can all be developed.