Any tips for helping my 2.4 year old manage his temper? He's a lovely well-behaved boy most of the time but when the red mist descends his nanny, DH and I find it hard to calm him down.
I know that toddler tantrums are a normal stage of development but the reason I am worried is that his very experienced nanny thinks he is more than usually ferocious during them. He hits, snatches, shouts and bites and becomes utterly furious. Or he is simmering and stubborn. Nothing seems to work so far, from calming voices to time-out (he refuses to stay there) to ignoring.
I come from a long line of angry grotbags bad-tempered people
and I am worried that unless he learns to manage it he will have difficulty making friends at pre-school / school. 
Am I over-thinking? And what would help? Reward chart / naughty step / persisting with timeout?