Additional resource for puzzles:
The U.S. Citizenship and Immigration Services has developed 100 new questions for the Naturalization tests. John Potter and his family created about 20 Word Searches related to these new USCIS questions.
This site – http://www.armoredpenguin.com/crossword/Data/best/civics/– has many “civics-oriented” crossword puzzles for various grade levels. The puzzles can be printed or completed on-line!