Callistemon
I am left wondering just what the older boy has achieved?
Having a different personality?
That is nothing to do with achievement
"I'm the oldest child - I make the rules"
"I'm the middle child - I'm the reason there are rules"
"I'm the youngest child - the rules don't apply to me"
I too was wondering about the achievements of the older grandson.
At 12, he is too young to be sitting exams etc, so it does seem to be a difference in personality.
How can I praise the older boy, acknowledge what he has achieved and all the effort he continues to make but not make the younger boy feel left out?
By praising both boys?