
When he’s a teen he’s going to (likely) be super horny and angry, and most people are going find him annoying. In ancient, ancient, ancient times, this is when he’d go on walkabout, live off the land and eventually steal a girl from another tribe, a) we’ve stopped doing that, instead letting him go through adolescence at home, and b) Our post-Christian (post-Paulean) culture thinks sex is icky and he’s a perv for being too horny to learn math.
This is when he’ll be tempted into the incel movement, especially if his school hits him with no sex ed, or abstinence-only sex ed (which is still a plague in the US). You’ll have to teach him boldly and candidly, or talk to Planned Parenthood about a way to explain everything from flirting to courtship to consent to protection.
I haven’t had the teenage girl experience, but I’ve heard it’s super easy and super arbitrary for her to be branded a slut. The whole patriarchal system is against her, so if she seems to have either a brain or ambition, her teachers, family, ministers and police officers will peg her as a feminist and future-childless-cat-lady. On the other hand, if she wants to be a tradwife (or pretends to) then she’ll be seen as boring.
Also when she’s in her mid teens, she’ll be intolerably cranky, and it’ll be very easy to want her to get managed by the other parent or go away or something.
Despite the rise of electronic books, works published in codex format are still very popular. Some even still have hard bindings.
No one likes scrolls anymore.