What do the presents show us about Boo? What do the children’s reactions tell us about the society they live in?

I think the children's reactions were typical for the time. Scout is less reserved than Jem. Scout is fascinated with the toys and rather excited. Jem is a little more cautionary about receiving the gifts. I don't think Jem's reaction is a sign of the times more than Jem is coming of age. He is more cautious about his world and, like his father, wants to act responsibly.