Atlantans are invited to watch as teams showcase their wacky, over-the-top contraptions designed to complete a simple task - opening a box - in the most complicated and whimsical way possible. Blending creativity, ingenuity and teamwork, the RGMC is the ultimate problem-based-learning competition, challenging students to think outside the box using everyday objects to engineer hilarious chain-reaction machines. Registration closes March 14, so aspiring inventors should visit the official RGMC website for details. To purchase tickets, visit childrensmuseumatl.org