A 7th Grade science teacher at Marshall Simonds Middle School in Boston, MA, Tammy Scelsi took her students out of the classroom and into a giant box. Actually, it's a 22x10-foot shipping container, dubbed the Curiosity Cube. Life science company, MilliporeSigma developed it and makes it available for free to educators. It's a mobile lab packed with hands-on learning opportunities and staffed by experts.