Teacher: “If I gave you three dogs and another three dogs and another two, how many would you have?”
Dustin: “Nine.”
Teacher: “No, listen carefully… If I gave you three dogs, and another three dogs and another two, how many would you have?”
Dustin: “Nine.”
Teacher: “Let me put it to you differently. If I gave you three bananas, and another three bananas and another two, how many would you have?”
Dustin: “Eight.”
Teacher: “Good. Now if I gave you three dogs, and another three dogs and another two, how many would you have?”
Dustin: “Nine!”
Teacher: “Dustin, where in the world do you get nine from?!”
Dustin: “Because I’ve already got a dog!”
