STICKY ENGINEERING: Kindergartener Trysten Legassie and his mother, Samantha Cushing, build and decorate a train from graham crackers, frosting and candy during a Math Mania event Thursday at Laura E. Richards School in Gardiner. About 150 parents and kids attended the event, which featured a pizza dinner after math games and was held to help support math concepts the students have been learning, according to Principal Karen Moody.