Can anyone recommend a good, short resource (article, blog) that I can give to my DS's teacher that explains ADHD in a nutshell especially as it relates to task persistence, impulse control and other executive function deficits. She has said some things of late that lead me to believe that she does not quite understand his limitations or believes that his actions are "purposeful" - i.e. lack of task initiation, focus, etc. when I ask him multiple times to do his work. I would like something that explains why that still occurs despite her repeated requests.