Children (Approx. 19 months - 6 years) will learn the following sequence: how to hold their breath underwater; swim with their head down and eyes open to problem solve and look for an exit; roll onto their back to float, rest, and breath; and roll back over to resume swimming.  They learn to repeat this swim-float-swim sequence until they reach the side of the pool and can crawl out or can be rescued by an adult.