ePals is a great site that students can use to safely communicate with other students and schools around the world. ePals partners with National Geographic, Smithsonian Education, McGraw Hill Education, and Cricket Magazine to bring project-based connected learning to students. The ePals Global Community has many resources for students and teachers to explore including a Common Core Implementation Center. This is a great way to find resources and projects that are aligned to the common core. ePals is FREE for teachers and students looking to connect with other classrooms around the world. I encourage you to check ePals out for yourself.
The video embedded below will explain ePals a bit more.