【片段1】画图游戏,激发兴趣。(教师随意在黑板上画上一大一小两图形)师:谁愿意上来给这幅图涂上颜色,请两位学生上来比一比谁涂得快?(比后教师宣布获胜者)生:(表示反对)老师,这样比赛不公平。 [Fragment 1] drawing game to stimulate interest. (Teachers are free to draw one, two, and two graphics on the blackboard) Teacher: Who would like to come up with a picture of this picture, please have two students come up sooner than one? (Later than the teacher announced the winner) :( Objection) Teacher, this game is not fair.