Engage your middle schoolers with Pastor Martin Niemoller's famous poem that begins, "First they came for the communists." Now that you have their attention, send learners to the various work stations you created to have them explore primary sources. Print the source documentation sheets (attached), so that learners can take notes based on what type of primary source they're looking at (pictures, speeches, documents, etc.). After class members have the opportunity to visit several work stations, bring everyone back fora short class discussion.