one Consult the literature and use for reference to solve the problem In view of the second round of problems, the author consulted a large number of literature. Closely follow the subject curriculum standards, under the curriculum standards structure unit teaching objectives; Structure the main problems of unit under the teaching objective of unit; From the Angle of the subject to determine the goal of class hour, in the framework of the goal of class hour key issues. That is, "teaching objective problem" "problem target". On the basis of clear subject problem and student problem, design teacher's guidance problem again. Optimize the problems and strengthen the relationship between these problems and the objectives of this lesson; Optimize the core problems, change the content-oriented problems and problem system into cognitive process-oriented problems and problem system construction, guide and help students to find problems, use the thinking state of problems coexist with each other to think about things and know the world. two Make plans and use them in advance to solve problems 【 objective 】 1. Guide students to sort out and identify the problems and core problems that meet the teaching objectives. 2. Preliminarily help students to establish the thinking habits and abilities of solving core problems and constructing the cognitive process of problem chain. 3. Flexibly research and develop other problem-solving teaching methods according to the specific teaching content and the needs of students. 4. Continue to improve group cooperation, optimize problems and improve the teaching effect according to the learning situation. "Content" Guide students to see the editor intention of teaching materials, see unit requirements to establish the main problems of the content learned. Conduct "task breakdown" of core questions and guide students to consider the connections between these questions. Flexible design according to the learning situation. A change from a classroom that focuses on finding answers to problems to one that leads to thinking about the connections between problems. Study a set of teaching design template that can be used at ordinary times and implant the learning process design of optimization problem system. The construction of problem system of strengthening cognitive process orientation. Preset operation flow Teaching design and implementation in the view of curriculum -- putting forward and solving the "trinity" problem -- optimizing the study of problem system -- group cooperative study -- exploring the evaluation of classroom teaching