Overheard in Math

Reading from the Math book: "Use a unit multiplier to convert 8 inches to centimeters."

"What unit multiplier will you use?"

blank stare

"Do you know how many centimeters are in an inch?"

"No."

"Go get a ruler.  Does it have centimeters?"

"No, it only has inches and millimeters."

"But you can get centimeters if you have millimeters, right?"

"Not on this ruler."

Who was it that said homeschoolers are smarter than public schoolers?  (I kid!  I kid!)