I would love to have my students in China join in the discussion about Christopher Columbus. They would like to share with your students the story of the great Chinese admiral, Zheng He (http://en.wikipedia.org/wiki/Zheng_He), and his exploration of the world 50 years before Columbus set sail.
My students are studying US history this semester, and we are exploring the topic of the “Columbian exchange;” how the the early explorations brought plants, animals, and diseases around the world for the first time.