强化数学应用意识是中学数学教改中尤需注意的重点之一，现就二次函数知识在社会实践中的应用作些论述与举例。在教学中加强理论与实践的联系，既可培养学生学习数学的兴趣，提高数学应用意识，又可激活数学学习的气氛，提高学生服务社会的本领，对推进素质教育，减轻沉重的学? Intensifying the application of mathematics is one of the important points that need to be paid attention to in the reform of mathematics teaching in middle schools. Now we have made some expositions and examples on the application of quadric function knowledge in social practice. Strengthening the connection between theory and practice in teaching can not only cultivate students’ interest in mathematics learning, but also increase the awareness of mathematics application. It can also activate the atmosphere of mathematics learning, improve students’ ability to serve the society, promote quality education, and reduce heavy learning.