In celebration of National Grandparents Day, the Gwinnett Environmental and Heritage Center invites people to step back in time and discover their family’s history. The event will be a the perfect time to bring grandparents for homemade ice cream and exploration of the 1930s heritage farm at the “Back When I Was A Kid ...” program from 10 a.m. to noon Saturday, Sept. 8, at the McDaniel Heritage Farm. “This is a special program for families, especially grandparents and grandchildren.