In Social Studies we are studying Early Man. The link below is to a website called Flocabulary. As they point out, "Early humans could not read books, but they could read something else: tracks." The link below takes you to a funny song that follows the rise of early humans. "From cave paintings and fire to irrigation and civilization, learn about humans’ first steps toward civilization here."
http://www.flocabulary.com/hunter-gatherers/