Erasmus is a special program for students who want to study at a different university in another country. Imagine you are playing with your toys at your home and you have a friend who lives far away and has different toys than you. With Erasmus, you can go visit them and play with their toys for a little while.
It's like taking a vacation to another country to learn new things and make new friends. When you go to that other country, you get to go to school there and learn things about different subjects. You also get to see and experience different things like the food they eat, the customs they practice, and the language they speak.
In exchange, other students from that country might come to your school and visit your country to learn about your toys and things you do. It's a great way to make new friends and learn about different cultures.
Erasmus is named after a famous philosopher named Erasmus who was from a long time ago. He once said, "The whole world is my home" and that fits very well with what Erasmus does – helping students feel at home in another country while they learn new things.