EU website on children's rights for for children and young people aged from 6 to 16. They can play games (divided into age groups), watch cartoons and videos and learn about their rights.
It can be a very good CLIL resource for them. They will learn about their rights and the world around them in a funny way and, of course, in English. Games range from simple quizzes to puzzles and action game.
More games and teaching material can be found on Teachers' Corner