Rub it out

I was working in the computer room with a large group of 5 year olds. They hadn't been on the computers very much. I had to show them a new program and what I wanted them to do on the IWB. They had to make a label with their name on it and decorate it. It was very stressful when they started because they all wanted some help. I was helping one little boy who had done something wrong. I said to him we needed to find the rubber so we could rub it out.  With that a whiteboard rubber was thrust in my face. A little girl had heard me and gone off to find one. She proceeded to try and rub out the computer screen.