To begin with, I would personally use Charlotte's Web with fourth, fifth, and sixth grades. Now this is not to say it would not be a fun book for the younger grades to be exposed to, but in terms of independent reading, I believe it might be a little hard. As for how I would use the book, I can think of two different ways. The first would be to build vocabulary, for this book offers some great new words that students may not know how to use the word or what the word is at all. The second way I would possibly use this book is for going over plot sequence, with the main focus on problems and solutions. I might also have the students write down all the different traits of their favorite character for a character analysis or I might have them compare and contrast two different characters using a Venn Diagram.