Inventors and inventions have helped to shape our world. Your class has been working hard and has put in many long hours on an invention. On a field trip your class goes to the US Patent office to register the invention. As the class heads into the office the door closes and locks behind you! There is a sign that says “you must show us you are worthy of a patent by solving the clues”. The timer starts on the desk. Hurry and solve the clues and earn the patent before the time runs out.