What can I do in SC that is "Native American" related w/kids

My wife and I are looking for something to do in SC that is "Native American" related. We need to go on a "Home School" field trip with our kids; (10 & 8).

I was hoping to find "Indian" related "Historical" places within 100 mile of the Florence area. ( Burial mounds, cultural centers, villages, battle areas. anything)

Does anyone know of anything?