Teach them Origami.

Pupils and parents at a particular school in Hertfordshire UK have been complaining that during the recent heat wave, the pupils were charged 5p for a plastic cup, in order to get themselves a drink of water.

Parents have been rightly outraged, as not only is the world trying to use less plastic, but it is also the 'human right' of every school child to have a ready supply of drinking water.

The solution is, of course, very simple. Show your children the short video below, and make sure they take careful note.

The best paper to use, is that page from their History Textbooks that contains the dates of all the British Kings and Queens (that you're supposed to learn). Alternatively (if that page has already been used), equally good are any pages from the Algebra section in your Maths book.