The first half is OK. I'm not keen on that use of "generation gap". There is, of course, a gap between the generations in every family! We tend to use "generation gap" to refer to society in general, not to single families.

English Teacher
Hello.
Can I say there is a correlation between "generation gap" and "family history"?
Does this work?
I think knowing about family history can help alleviate some of the problems that are caused by the generation gap in a family.
The first half is OK. I'm not keen on that use of "generation gap". There is, of course, a gap between the generations in every family! We tend to use "generation gap" to refer to society in general, not to single families.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.
I'm not sure where you're trying to go with this at all. Are you trying to suggest that learning some family history can help to bring the different generations of a family together?
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.
How can I make a correlation between family history and generation gap?
I can't really think of a way. The generation gap is something that refers to an entire population. Family history is limited to the genealogy of the family involved.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.
I'm not a teacher. I speak American English. I've tutored writing at the University of Southern Maine and have done a good deal of copy editing and writing, occasionally for publication.