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一、提问要围绕本节课的重点和难点教学重点是教学大纲明确规定的必须掌握的知识,是一节课的精华所在.只有把握了重点,那么难点才能被突破.通过提问,从学生能直奔主题,积极思考,感知重点和难点,从而能顺利地开展课堂教学,提高教学效果.例如,讲授“二面角的概念”第一课时,重点是掌握空间二面角的平面角概念,难点是二面角的平面角如何寻找及怎么证明.根据重点设计三个问题:1.两条异面直线所成的角怎么度量?2.直线与平面所成的角怎
First, the questions should focus on the focus and difficulty of this lesson Teaching emphasis is the syllabus must be mastered knowledge, is the essence of a class where only grasp the key, then the difficulty can be a breakthrough by asking questions from the students can For example, teaching “the concept of the dihedral angle” the first class, the focus is to grasp the plane angle of the dihedral angle of the space Concept, the difficulty is how to find and how to prove the planar angle of dihedral angle.According to the key design of three questions: 1. How to measure the angle formed by two different lines? 2.