We learned about the early Sumerians today (circa 2300 B.C.) As the kids listened, they built Lego ziggurats. The oldest eagerly searched for images of ziggurats so the kids had an idea of what to build.
... And I just sat and read for 1.5 hours this morning. Hey, all I need is bon-bons and I'm a stereotypical stay-at-home mom. ;-)