There's a lot going on for third graders. School's getting tougher, their bodies are growing quickly and they're establishing an identity for themselves. Perhaps their biggest focus, however, is their social life. Their friendships become closer and more complex. They look past the adults in their lives and they look forward to seeing their friends, many of whom may stick around for years to come. It's an exciting time for them. For parents, there's a whole new set of things to know. Read this slideshow to learn about the social development of your third grader.