Video games and basketballs are awesome and all, but let's not pretend they inspire the same awe for the world as your best buddy science. Remember when you were a child and you’d build your own volcano in the kitchen? How about the magic of growing your own multi-colored crystals? It blew your mind. This weekend, introduce your kids to the seriously cool stuff: let them play with robotics, excavate "dinosaurs," or learn the basics of physics.