That's a good idea! Giving young kids access to internet is always a spicy topic. But we want them to get familiar with the important technology and give them access to information as well. Having this controlled offline setup is a good way. Have in mind, Kiwix has also all TED talks (or like in Wikipedia downloadable subsets too with smaller size) with educational talks about many topics, such as animals or media. TED talks are videos of people talking about a subject. This application is a game changer; and it's available on the phones too, lol.