The umbrella burst open cannon for the person and the umbrella burst open cannon for the helicopter both comprise boxes, wherein smokeless powder is placed in the boxes. The helicopter escape system, the umbrella burst open cannon for the person and the umbrella burst open cannon for the ...
room for education was coined by Nicholson, who defined it as a “live-action team-based game where players discover clues, solve puzzles, and accomplish tasks in one or more rooms in order to accomplish a specific goal (usually escaping from the room) in a limited amount of time” [28]...