The card game of negative obligations.

Practice modals of obligation

The aim is to explain how must and have to are used, both in form and function

20-30 minutes word game.
Modal verbs.

U2's song "Sometimes you can't make it" has the lyrics with exercises. It deals with family issues. Gramatically, it demonstrates the difference between "mustn't" and "don't have to". It has also a vocabulary exercise on the different uses of the words and/or expressions: "alone", "lonely", "on one’s own", "by oneself" and "go it alone".

The tales of the unexpected: Ghost Handprints
vocabulary practice
grammar practice: prepositions & modal verbs (can and must) - understanding the modal verbs

To write down what you can and can't do in places and to guess what the places are by reading the rules.

To write about and discuss how people must and mustn't behave in your ideal world.