* Massachusetts Curriculum guidelines for Social Studies and History - http://www.google.com/url?sa=t&source=web&ct=res&cd=1&url=http%3A%2F%2Fwww.doe.mass.edu%2Fframeworks%2Fhss%2Ffinal.pdf&ei=62ReSsT7DZHeMYnjua4C&usg=AFQjCNFNVrPW0W4nwCAuqtZfcf5fhn68tQ