小学是学生形成数学思维的关键阶段。但是许多教师都倾向于用题海战术达到使学生记住的目的,而没有在意他们是否真正掌握了知识点。爱因斯坦说过:“兴趣是最好的老师。”而开放式教学是激发学生兴趣的有效方式,因此教师在设计练习时要确保每一道习题都可以充分调动学生的积极性,要使练习具有开放性。 Primary school is the key stage for students to form mathematical thinking. But many teachers tend to use the tactics of the sea to achieve the purpose of keeping students in mind, without regard to whether they really grasp the point of knowledge. Einstein said: “Interest is the best teacher.” Open teaching is an effective way to stimulate students ’interest. Therefore, teachers should ensure that every exercise can fully mobilize students’ enthusiasm when designing exercises Practice is open.