有效的教学活动是学生学与教师教的统一,学生是学习的主体,教师是学习的组织者、引导者与合作者。可见,教师的有效引导,有利于营造师生互动、生生互动的课堂氛围,促进学生主动探究,从而掌握知识。因此,教师在教学中应当根据学生的实际情况,因势利导,因材施教,适时灵活调控,启发学生思考,使学生成为学习的主体,逐步学会学习。一、设计恰当问题美国著名数学家哈尔莫斯说过:有了问题,思维才有了方向。有效的问题,如同大海中的航标灯,牢牢地吸引学生 Effective teaching activities are the unification of student learning and teacher education, students are the main body of learning, and teachers are the organizers, guides and collaborators of learning. Can be seen that the effective guidance of teachers is conducive to creating a teacher-student interaction, interactive classroom atmosphere, and promote students to explore, to master the knowledge. Therefore, teachers in teaching should be based on the actual situation of students, guide the situation, teach students in accordance with their aptitude, flexible and timely control, inspire students to think, so that students become the main body of learning and gradually learn to learn. First, the design of appropriate questions Harmus, a famous American mathematician said: There is a problem, thinking has its direction. Effective issues, like the beacon in the sea, firmly enthused students