开放题教学是一种能调动学生学习积极性,激发学生学习兴趣,拓宽学生思维空间,锻炼学生的表达和创新能力全新教学形式。拟从数学开放题的界定、设计原则、教学原则三个方面,探讨在数学课堂中引入开放题教学的必要性。 Open teaching is a new teaching method that can arouse the enthusiasm of students, stimulate students’ interest in learning, broaden students’ thinking space and train students’ expression and innovation ability. It is proposed to discuss the necessity of introducing open question teaching in math class from the aspects of the definition, design principle and teaching principle of the open question of mathematics.