I'm looking to help some teachers improve questioning throughout their lessons. Are there any articles, websites, blogs, etc that you would suggest?

I am beginning the year looking at primary documents on a 3rd grade level. Some of the items I am including are the Pledge of Allegiance, The Star Spangled Banner, and the March on Washington (Aug 28- I have a Dream speech). I focus on the "I Have a Dream" portion of the text because it is most familiar. I let the students know that there was more to the speech and as a center, I have the students analyze the inspirations that were used in the speech. I feel that these would be a great start for students to look at primary sources seeing how they are familiar.