On a blank map, use different colors to shade in the ranges of where the different prehistoric animals lived: mammoths, saber-toothed cats, and terror birds. Could a human in 10,000 BCE have encountered all of these animals?
What were tools and weapons actually made of in 10,000 BCE? What is the earliest evidence of the Iron Age? Which metals were smelted by humans before iron? Why do you think the filmmakers chose to inaccurately depict the use of metal in the film?
What is the first evidence for the domestication of horses and where was it found? When, where, and by whom were horses first used in a militaristic fashion, as depicted in the film?
Research what genetic mutation led to blue eyes and when and where this trait first appeared in humans. How did scientists figure this out? How common is your own eye color in the world's human population?