My 11 year old son was ambidextrous in Kindergarten but we had him use his right hand only to practice writing. If he is holding something in his right hand while he is eating, he will use his left hand to eat. If he is using his right hand to move the mouse while on the computer, he will use his left hand to write. His handwriting is only a little better when he uses his right hand. When he is doing piano, he will occasionally play the left hand notes with his right hand. He occasionally rights 5's backwards and they look more like 2's. He sometimes writes P's backwards.
But he started reading at 2 1/2 on his own and could always spell really well. If he sees a word, he usually remembers how it is spelled. We homeschool but I never really had to have him work on spelling because he was naturally good at it and he only worked on it the year he participated in the state spelling bee.
I think my son just has motor memory issues (motor dyspraxia)and this is what caused him to have to think each time he writes the letter P or the number 2. It never became automatic for him.
