This is super depressing. What do we do? Firewall all the things at the house and get rid of tablets/phones?
Here is a comment with detailed instructions for how to setup Kolibri and Kiwix, which are really useful educational software that works on localhost (or local network): https://news.ycombinator.com/item?id=26137100 The idea is after installing these locally, you could turn off the internet connection.
Here are some ways to "combat" the choices available, though, if you want:
- kill/limit streaming services
- kill/limit TV in general
- limit internet time(s) per device
- have your kids go outside and play