As homeschoolers we are obligated to teach citizenship whether our state requires it of us or not. Our state happens to require it. Here is an excellent resource that can be used over and over and over and over through the years. Each year the topics can be discussed in more depth and with more understanding for the child. Tangential historical events, ideas, etc can be drawn from these short passages and listings as well.
I believe these are simply 2 editions of the same book but I'm linking both: