In this video Eric Dubay from the International Flat Earth Research Society and Luke from Flat Earth Consequences give their advice on how to effectively present other people the concept of Flat Earth without having them instantly cover their ears and stick their tongues out at you.
Flat Earth has become the most influential grass-roots movement in modern times and the biggest conversation on the internet for good reason. You are not living on a tilting, wobbling, spinning sphere-pear globe as you have been taught to believe. The Earth is actually a motionless extended plane with the Sun, Moon, stars and planets all revolving over and around us just as it appears.
EricDubay.com 
Its hard to get the entirety of what is being presented it needs to have a way a teachable and simple way to make others understand mathematics they don’t understand also videos linking one to another that way others can see how its being presented with optional and social media agreeing on these things that are being presented.. It makes better when your not alone on a subject… Eric dubay nails it in my opinion but some might need more……. One of the best proofs is Eric dubays 200 proofs the earth is not a spinning ball..