This is a great resource on what athanian democracy was like. I would probably use this as a place for primary sources. Using directly as written would be a little above 6th Grade.

This is a SHEG Activity that teachers the skill of contextualization. It uses Martin Luther's letters to show that the historical context effects what people do and think.

This is SHEG activity. They are really good at find Pimarary sources. Frequently the task they ask students to do is a bit above their grade level but with some modification here is a great activity to teach students about the atrocities of the slave trade.

This is a great resource on what Roman Republic was like. I would probably use this as a place for primary sources. Using directly as written would be a little above 6th Grade.