A large group of foreign, english speaking school children was finding their way through Amsterdam.
Beware of the traffic. They looked rather young for a schooltrip abroad, but maybe I am to old to estimate the correct age. I was sixteen when I had an exchange program with school to Liverpool and stayed at an english speaking family with a girl of my age for a week. That same girl stayed at my house in Amsterdam during Easter.
Must be exciting for them to explore an other country. You'll learn more than from books.