I am absolutely mad about Google MyMaps. Check out the collectively authored map my YouthLAB groups did in Chicago and Barbados at www.youthlab.net! They researched the slave routes, the Barbados youth located the African countries and regions where their ancestors came from and placemarked those. They even added in diary journal entries from enslaved passengers across the Middle Passage.
Then they incorporated their own family migrations, located their neighborhoods, embedded photos… Continue