Tone and mood are literary elements that are difficult for readers to grasp and retain, at any age, let alone middle school.
The two are often confused and middle school students can't seem to find a way to differentiate the two, no matter how many times they are told that tone is what the author/narrator's attitude is towards the text and that mood is the reader's attitude toward the text.
Through the wonderful internet site, youtube.com, teachers now have a guaranteed way to make tone and mood "stick" in the minds of their students.