“关键问题”是学习活动的重心,是学生思维活动的起点,是学生探求真理、创造发明的起点;“关键问题”是连接教师、学生和教材的纽带,是激发学生学习兴趣、启发学生深入思考、引导学生扎实训练、检验学生学习效果的有效途径,是促使学生全员参与和有效参与的前提和关键,是提高合作学习的基础。没有关键问题,学生就难以参与,难以思索、探究、讨论和交流。一、关键问题的设计方法1.紧扣目标问得准。学习目标是学生学习的知识点、培养的 “Critical Problems ” is the focus of learning activities, is the starting point of students’ thinking activities, is the starting point for students to seek truth and create inventions; “Critical Problems ” is a link connecting teachers, students and teaching materials, is to stimulate students interest in learning It is an important prerequisite and key to inspire students to think deeply, guide students to practice solidly, and test students ’learning effectiveness. It is the prerequisite and key to promote students’ full participation and effective participation, which is the basis of improving cooperative learning. No key problem, students are difficult to participate in, difficult to think, explore, discuss and exchange. First, the design method of the key issues 1. Close the target asked. Learning objectives are the learning points of students, training