Ninth-graders at George Washington Carver Collegiate Academy learn to shake hands and greet each other during the first day of school in New Orleans. Kainaz Amaria hide caption

itoggle caption Kainaz Amaria

Dominic Rudakevych and Marilyn Fisher, 2014 champions of the National Marbles Championships in Wildwood, N.J., pose at the marbles rings in Middletown, Md. The two 13-year-olds train with the Frederick County Knucklers, a competitive marbles recreational program in Maryland. NPR/Sarah Tilotta hide caption

itoggle caption NPR/Sarah Tilotta