Complete URL for links:

Form: https://docs.google.com/spreadsheet/viewform?formkey=dEw0ZHBlSThjYXR1ak1SWmhaUDFHeFE6MQ#gid=0

Caveman Facts: http://www.bbc.co.uk/sn/prehistoric_life/human/species/

Early Humans Survive the Ice Age: http://www.history.com/videos/early-humans-survive-the-ice-age#prehistoric-humans-cross-the-atlantic

Discovery Education Homepage: http://login.discoveryeducation.com/?returnUrl=students.discoveryeducation.com