In order to qualify for a license, a gym teacher must have a minimum of a bachelor's degree and pass competency examinations covering both general education and topics pertaining to their area of specialty. After a teacher is licensed, they must also meet continuing education requirements set by their state.
Mistake #3: Keeping mixed formula out too long. Formula that is sitting out at room temperature must be thrown away after 1 hour. If it is in the refrigerator, pre-mixed formula (also called ready-to-feed formula) that is opened must be thrown out after 48 hours. Formula that you mixed must be thrown out after 24 hours. Mistake #4: Re-using leftover formula.
To fill a 2-ounce bottle, add 1 ounce of water to 1 ounce of liquid concentrate, then shake vigorously. Mix one bottle at a time; or prepare a day or two's worth, refrigerate, and use within 48 hours. Ready-to-Feed. Simply open and pour the ready-made formula into your baby's bottle. No measuring or mixing is necessary. Ready-to-feed formula comes in 2-, 6-, or 8-fluid-ounce containers. Once it's opened, cover any unused formula and refrigerate it for up to 48 hours.