You can't 3D print an iPad mini—yet—but you could win one by taking the Stratasys 3D Printer Knowledge Challenge.
The online quiz is modeled after Who Wants to Be a Millionaire, with eight questions designed to plumb your knowledge of 3D-printing technology. Just like in the venerable TV game show, you must answer the questions correctly within an allotted amount of time to advance to the winner's circle. There are three hints you can use along the way. And if you don't ace the quiz this time, don't despair: You can try again next month, when eight new questions will be added.