Tina Jackson teaches the “Cha Cha Cha” at a drop-in soul line dancing class at Oxford Community Center in St. Paul, Minn. on Tuesday.

When Sardia Lewis took the mic on a recent Tuesday evening in the Bay Shore-Brightwaters Public Library auditorium to lead class, you would have never known it was her first time as an instructor.

Cha-cha right. Cha-cha left. Step up, step back and turn and turn ... On a recent Wednesday night this summer, more than 30 women and girls danced, laughed and learned those moves during a soul line ...