It was created in the 1950’s
Since pathos is an emotional appeal to the audience. so in this case to convince someone to donate money for a park, you could tell them stories about children who do not have parks to play at or a vision of all of the happy children playing at the park. Really anything that is going to evoke some kind of emotion out of the reader/viewer
I think that as a parent, I would be fair, but not to strict. I feel that applying discipline is necessary when being a parent, or you might turn out with spoiled little brats.