We designed each iCivics lesson to be stand-alone and supplemental. But, we have organized the lessons in our units to reflect a sequence that might make planning easier. That being said, we encourage teachers to shuffle at will!
Check out the iCivics Scope & Sequence document that can also be found on our webpage. This should assist you further and provide more detailed insight. Don't forget to visit our Teach Hub and look through our curriculum units!