Codes of the Underground Railroad – African American History Month 2018 #BlackHistoryMonth

Adafruit BHM2018 blog

This video from NASA Video was created for students and shares some fascinating information about the Underground Railroad:

This video segment explores the different routes that slaves used to find freedom and the ways that they communicated the routes to one another. Viewers learn that the slaves followed four main escape routes. Quilt patterns could communicate the times when the routes were available and where they were located. The patterns used mathematics and geometry.

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