Thank you Lisa. I was an engineer too and I know what you are saying. Yes, my son loves math and science. He won't miss any episode of Mythbuster. He can draw his video game ideas for hours. He can read few books in a row. But he can not sit still writing three sentences without wondering around. At school, it happens few times that he just staying on seat for 40-50 min. without putting down one word. When he took his undone work home, I had to spend 1 or 2 hours to supervise him or force him to finish. Both of us are frustrated. I don't expect him to be a good writer. I just hope he can done his work easier.