Wednesday, July 16, 10-11:30 a.m. Get a first-hand look at the electron tossing power of voltage, the withering heat of current, the essentials of electrical safety, and the most common techniques for generating electricity. Open to rising middle school and high school youth. Free. Open to all. Registration required by calling 404-303-6130 or emailing: marlan.brinkley@fultoncountyga.gov. Sandy Springs Branch Library, 395 Mount Vernon Highway, Sandy Springs, 30328. The Buckhead Library also holds the class on Thursday, July 17, 2-3 p.m. Register by calling 404-814-3500 or emailing: amy.alexander@fultoncountyga.gov. 269 Buckhead Ave., NE, Atlanta, 30305.