There are lots of educational programs on the DS like "French Coach", "Lets do Yoga" and "Can't decide what to cook : Cooking Guide" but these are not games.
As a platform for Educational Software the DS is very good. Learning and games rarely work that well together.
One good example is on the PC, I really understand how portals works now. "Speedy thing goes in - Speedy thing comes out"
Playing : PC AOE, DiRT 2, Runes of Magic, Wings of Prey & Planetside 2
Wii U : Nintendoland, Super Mario U & Fifa 2013 demo
DS : Guitar Hero : On Tour
Formerly unknown as Vengi