GCompris: I Got It

An educational learning tool with some gaming fun for the younger ones. Developed for children ages 2-10 with over 100 activities to keep the fun in learning. This piece of free software is highly rated.

The website states "Below you can find a list of categories with some of the activities available in that category.
- computer discovery: keyboard, mouse, different mouse gesture, ...
- algebra: table memory, enumeration, double entry table, mirror image, ...
- science: the canal lock, the water cycle, the submarine, electric simulation ...
- geography: place the country on the map
- games: chess, memory, connect 4, oware, sudoku ...
- reading: reading practice
- other: learn to tell time, puzzle of famous paintings, vector drawing, cartoon making, ..."

http://gcompris.net/index-en.html