This activity is based on the concept of "learning by teaching": the child is placed in the position of the teacher who must teach the formation of letters to the robot whose writing is very bad.

The letters written by the robot represent frequent errors in writing (wrong direction, tremors, letters that are too angular, etc.). The goal is therefore for the child to identify these errors and show the example to the robot with their best handwriting. The robot then learns from the child and starts over. The more consistent the child's handwriting, the higher his or her score.