Gcompris Demo - A high-quality educational software suite
GCompris is a high-quality educational software suite, that includes a large number of activities for children aged 2 to 10.
https://www.gcompris.net/index-en.html
Some of the activities are game-orientated, but nonetheless still educational.
Here is the list of activity categories with some examples:
computer discovery: keyboard, mouse, touchscreen ...
reading: letters, words, reading practice, typing text ...
arithmetic: numbers, operations, table memory, enumeration, double entry table ...
science: the canal lock, the water cycle, renewable energy ...
geography: countries, regions, culture ...
games: chess, memory, align 4, hangman, tic-tac-toe ...
other: colours, shapes, Braille, learn to tell time ...
Currently, GCompris offers more than 100 activities, and more are being developed. GCompris is free software, it means that you can adapt it to your own needs, improve it, and most importantly share it with children everywhere.