课堂教学是一个师生互动的动态变化过程。影响课堂教学效果的因素有多种多样的。充分地理解和把握有效性的含义及其成因,并提出改进教学方法和教学手段,是提高教学有效性的有效途径。 Classroom teaching is a dynamic process of interaction between teachers and students. Affect the effectiveness of classroom teaching a variety of factors. It is an effective way to improve teaching effectiveness by fully understanding and grasping the meaning of validity and its causes, and proposing improving teaching methods and teaching methods.