We just finished the Civil War and my kids loved it! I don't know where you are starting but we began with slavery and the underground railroad. Our kids made a freedom quilt after reading Sweet Clara and the Freedom Quilt and then they had to write a persuasive letter to President Lincoln from the point of view of an abolistionist, plantation owner, or slave (chose out of a hat). This is a really great activity because even though they don't agree sometimes, they have to get in that mind set and back it up with historical data. Scholastic makes a really great simulation book for the Civil War, just be fair warned it is in depth and may take about a week or two depending on how much time you are devoting to it. The kids really love it and get a feel for how the soldiers lived and took pride in their side's wins and losses during the battles.
Some read alouds:
Pink and Say
Sweet Clara and the Freedom Quilt
Henry "Box" Brown
Two Tickets to Freedom (based on a true story)
Websites:
http://teacher.scholastic.com/activi...ound_railroad/
http://www.nationalgeographic.com/railroad/
http://www.radford.edu/~sbisset/civilwar.htm
There is so much you can do with it! Another teacher I knew divided her class up into four groups and the students had to write a newspaper (2 Union - 2 Confederacy) from that point of view and time period. Good luck!