It was a scene from some wacky time machine with big yellow school buses instead of stagecoaches parked at the Wayside Inn and 150 children, dressed in identical yellow camp t-shirts, enjoying ice cream sundaes served by the inn’s staff. But the scene seemed perfectly appropriate to Sudbury Summer Camp Director Joe Dinmore as he watched his campers explore the inn and its grounds in small counselor-supervised groups. "The inn is being used as it always has been, as a rest stop," said Dinmore. "It’s the perfect rest stop for the kids on their way back from Movie Camp Day in Framingham." The trustees of the inn want to introduce a new generation to the historic site that includes the country’s oldest operating inn and invited the campers to experience the hospitality extended to travelers for more than 300 years. During each of the camp’s three two-week sessions the inn treated the children to ice cream and a history lesson about life in Colonial America. In addition to the inn the 120-acre campus includes the Grist Mill and the Redstone Schoolhouse, both staffed by historical interpreters. The children were also welcome to play games in the field or feed the fish in Josephine Pond. "As a teacher I’ve watched field trips dwindle in school because of the amount of allergies, cost of transportation and the amount of exposure kids have to other things," said Dinmore a second grade teacher at Israel Loring Elementary School. "As field ...