Edmodo would be a useful tool for checking progress with individual students or groups. I would create questions for students to answer prior to lessons for outside exploration. For example- Please practice "Civic Virtue" this weekend and share your experiences in your journals.
I would definitely use Poll Everywhere. It had a lot of features that could easily be manipulated to teach different categories of government. Students would be given the opportunities to demonstrate voting. This would lead to some wonderful class discussions.