Shown is teacher Stephanie Koller’s Grade 4 science student inventors, who faced off in the Greentree School version of Dragons Den Thursday, February 5. The event was a wind-up for their science unit on wheels and levers. Students were challenged to create an invention, or improve upon an existing machine. The winning project gets a trip to Dairy Queen with Mrs. Koller, plus $100 donated by one of the Greentree School Dragons. Seated in the back row are “Dragons”, local judges (l-r) Constable Craig Nelson, Mrs. Cindy Gerodo, Mr. Bob Brown, Mr. Bob Sheddy, and Mrs. Koller (standing).