Add some hands-on learning to your St. Patrick's Day celebration with this St. Patrick's Day STEM challenge. STEM challenges are a great way to develop problem solving, critical thinking and many more essential skills. My children always love to create leprechaun traps, but now, instead of catching a leprechaun they are trying to help them get to their pot of gold! Use simple materials to create a catapult to launch your leprechaun through the air and towards their pot of gold. The product in