This is a great lesson I have used for years with my history students. They enjoy it time and again because they will leave class with something new and fun, something they can actually hold.
I do this as part of a lesson on Christopher Columbus (Cristobal Colon), but one could tailor this to make it fit into just about any classroom in any way.
When we learn about Columbus, at some point I will ask the students, "But, how did Columbus know? This is in reference to his belief that by sailing west he would eventually arrive in the east. Was it a hunch? Was it a dream? No! Any educated European at the time knew the world was round.
Students will learn about what educated Europeans thought the world was like in the late 15th century. Yes, they were way wrong but they had their ideas.
Students will create a learning tool based on what existed at that time to help them remember this lesson and how Columbus knew what he knew. Have fun!