Special to the Tribune Great Bend sixth graders will have the chance to see and learn about a human brain, x-rays, and a healthy lung and a smoker’s lung when they participate in the fifth annual "Sixth Grade Health Smarts" at Central Kansas Medical Center. The popular event is set for Wednesday and Thursday, Nov. 10 and 11, when the students will have access to information about a wide variety of health-related topics. "The information about the brain, lungs and x-rays will be highlights," said Stacy Hefley, CKMC marketing and merchandising coordinator.