The OC Common Core Network is a public page on Edmodo, and anyone is welcome to join. If you are already on Edmodo, add the group with this code: deem0u (note the 0 is a zero).
To join Edmodo, go to http://edmodo.com and sign up with the "I'm a teacher" option. Once you have your account setup, click join under groups on the left side, and enter the code above.
Via Cindy Carbajal, DT Hernandez