浅、深水交替教学是教师根据所教学生的心理、生理特点以及上课游泳池水位情况，在每次课中合理地进行浅、深水交替教学。该方法可根据学习任务，学生学习过程中的实际水平，侧重于浅水或深水，也可浅、深水并重。 　　一般蛙泳初级教学，第一阶段 (熟悉水性 )浅、深水的比例为 Shallow and deep water alternate teaching is based on the teaching of students to teach the psychological, physiological characteristics and the level of swimming pool, in each class reasonable shallow, deep alternating teaching. The method according to the learning task, the actual level of students in the learning process, focusing on shallow or deep water, shallow, deep water can be equally. General breaststroke primary teaching, the first phase (familiar with water) shallow, deep water ratio