Go to a bait shop and get the following:

Bobbers/floats 1/8 oz sinkers Trout hooks Nightcrawlers Powerbait

Tie the hook to your line, attach the sinker two inches above the hook, and attach the float 2 feet above the hook. You can always adjust the float if you aren't getting any bites.

Usually stocked trout will go after powerbait or nightcrawlers(or both). Be prepared to go wherever you are going early and also to be around a lot of people. Carolina Trout Pond is a good place to take kids, also very busy. There may also be some kids only places.