This is a cut and paste timeline regarding Christopher Columbus, Vasco de Gama, John Cabot, Amerigo Vespucci, and Ferdinand Megellan. There are eight, main events from the late 1400s to the early 1500s listed. The students simply cut and paste. I used this after teaching about these facts, but you could just provide the appropriate access to litearature and other resources and use as a collabrative group activity. Enjoy!