I was also taught this thing (flat earth in the medieval ages) in school (in Germany). I was also taught that Christopher Columbus believed the Earth was flat a

I was also taught this thing (flat earth in the medieval ages) in school (in Germany). I was also taught that Christopher Columbus believed the Earth was flat and we even played Christopher Columbus's trying to convince others of a spherical earth. But it just seems that it is wrong. That apparently happens in school. Yes, in the medieval ages, heliocentrism was questioned.