Check out the story about the Nano and Lego Duplo over on Wired’s GeekDad Blog.
It was interesting to see how he interacted with the Nano. By altering the maze he watched intently how the robot adjusted. He’d coach it saying, “You can do it, Bristlebot!” Or he’d direct it saying, “Go that way!” The robot can’t hear or understand him however, and would just vibrate whichever way it was going to go bouncing off Duplos along the way.
The full story can be found over on Wired’s GeekDad Blog.