I Don't Know

We wrote in our journals today about something we like to do with a friend. Everyone was able to understand that they were to draw a picture of themselves with a friend. When I called S to my desk to show me what he drew he pointed to himself and called himself by name. He told me who the other 2 people were in the picture. When I asked him what they were doing he said "I don't know". He may be learning English and he may understand some but he still does not know everything he wants to say.