We are presented with some vocabulary in the first place to learn about everyday activities and rules at school. As usual, the vocabulary is presented in writing and through audio files. We also have some vocabulary activities before we use it to practise obligation (must) and prohibition (mustn't).
Rules at a park, at a museum and when driving are also introduced before practising them with must/mustn't.
Once again, the Collège Marc Chagall interactive books can help us to develop our English in more ways than one: grammar, vocabulary, pronunciation, listening, writing.