Cut the noodleCut the pool noodle into three equal pieces. Cut a slit down the side of each of the pieces. You will use one pool noodle for every solar heater that you make.
Attach the noodles to the hoopSlide the noodles over the edge of the hoop and use duct tape to secure it in place. Place them evenly around the hoop.
Place the lily pads in the poolPlace the lily pads in the pool. The more you put in the water the better it will work. The sunnier the day is, the better it will work as well. Remove the solar heaters before you go swimming.
Never let children swim without adult supervision.