Top tips including making a revision timetable up to ten weeks before the exam, dividing learning into manageable chunks and sharing revision plans with parents and teachers.

BBC: One in three students wears 'lucky exam underwear'

To condense his subject into manageable chunks, Mr Winchester uses Shakespeare's seven ages of man as a structure: the infant is a metaphor for man's first interest in the ocean, the schoolboy represents its exploration, and so on.

ECONOMIST: The Atlantic Ocean

To guard against that risk, the UN's International Civil Aviation Organisation (ICAO) has just held a summit in Montreal, at which it divided the long list of ATM modernisation projects into manageable chunks, on which the world's aviation authorities will try to agree standards, one at a time.

ECONOMIST: Aviation