ISR Self-Rescue Swimming Lessons for children ages 6 months to 6 years with Certified ISR Instructor, Cassie Edelman. Serving in the Largo area! "Not one more child drowns" Lessons for a 6-12 month old focus on teaching the child to roll onto their back to float, rest and breathe, and to be able to maintain this life- saving position until help arrives. Lessons for children 1-6 years old focus on teaching the swim-float-swim survival sequence. Children learn to swim with their head down; roll onto their back to float, rest, and breathe; and roll back over to resume swimming until they reach the side of the pool.