Joshua is 7 years old. He lives in Berlin, Germany. He is very sick. He cannot go to school. Joshua has bad problems with his lungs(肺). He has a tube(管子) in his neck. He must stay at home.
A special robot sits in his place at school. The robot has a light on its head. The light turns on and off when Joshua needs something. The boy’s teacher and friends can talk to him. It is very important for Joshua. He can still be a part of the class.
There are other similar robots. They can help when a child cannot go to school. Then the child does not feel alone.