课堂是学生掌握知识、发展能力的主要场所,问题情境能使学生在生动有趣的情境中获得有价值的数学知识和技能。一切思维活动都是由问题开始的,问题能使学生产生困惑,产生一种满足感。创设数学问题情境可使学生在“动中生疑”、“疑中生 Classroom is the main place for students to acquire knowledge and develop their abilities. Problem situations can help students acquire valuable mathematical knowledge and skills in vivid and interesting situations. All thinking activities are started by the problem, the problem can make students confused, resulting in a sense of satisfaction. The creation of a mathematical problem context allows students to ”suspect“, ”suspicious students