My DS6 wants to write books, but is having writer's block. He starts with a great idea, but then does not know what to write. I am not a good teacher and struggle to help him with the next steps. Can anyone recommend an age appropriate creative writing resource or app that we could tap into? He is headed to 1st grade but reads on a 3rd-4th grade level. Just finished The Wonderful Wizard of Oz, so is able to manage a resource that is slightly more advanced than 1st grade. Thank you for your ideas!