新一轮课程改革着重强调了学生学习方式的改变和课堂教学形式的改革,倡导教师“从学生实际出发,创设有助于学生自主学习的问题情景,引导学生通过实践、探索、交流获得知识,形成技能,发展思维,学会学习.”也就是教学过程要体现探究性.而要让学生真正的探究性学习,问题设计则是关键.一、延伸拓展,问题设计体现思维深刻性解决问题的能力和一个人的知识水平、认识结构等因素有关,作为教师应该在已知问题的基础上做适当的延伸、挖掘,设 The new round of curriculum reform emphasizes the change of students ’learning styles and the reform of classroom teaching, and advocates that teachers should “create problems that help students to learn independently from the students’ reality and guide them to gain knowledge through practice, exploration and exchange” , The formation of skills, development thinking, learn to learn. "That is, teaching process to reflect the inquiry. And let the students to explore the real learning, problem design is the key. First, the extension of development, the problem design reflects the profound thinking to solve the problem Ability and a person’s knowledge level, cognitive structure and other factors, as teachers should be based on the known issues to do the appropriate extension, mining, design