Stone Fox
I know this may sound rather simple, but I use Stone Fox first thing with my 4th graders. I use it to teach one and only one skill. We identify Little Willy's character traits, such as hard-working, loyal, kind, etc. Then we find evidence in the book (examples from the text) to support our opinions. I want my students to be able to support what they say and not just throw out opinions which alone are pretty weak. After reading Stone Fox, I can always refer back to it when someone says, "What do you mean I have to have evidence or examples from the text to support what I say?" It's as if they've never heard of such a thing before, but I just remind them of what we did with Stone Fox and the light bulbs go on! It's simple, it's quick, it works, and it's a skill I expect them to apply throughout the year!