The current more flexible targets by the end of each Key Stage will also be replaced by more rigid year-by-year targets, but it is not yet clear how this learning will be assessed.

BBC: Primary maths plan threatens 'too much too soon'

Most aluminum alloys are much more rigid, which not only transfers more road vibrations to the rider, but also tends to crack easier under stress.

ENGADGET: Engineering a better bicycle with DBC City Bike Design Alt