In Iceland, it always snows. And the houses in villages are very far from the school. So the children go to school by sled. If it snows heavily, they will study at home on the Internet(互联网).
In Britain, some children go to school by subway. It's fast and convenient. They must get on the subway one by one. They can't fight(打架)on the subway.
Some children in Germany go to school by bike every day. That's good exercise. And they must wear the helmet.