Saturday, October 2, 2010

Teaching Dividing By Zero versus Into Zero

Teaching Dividing By Zero versus Into Zero


We know that,
0/2 = 0
BUT
2/0 = undefined
Now, how do we teach it?
The trick is to use a rubber band :)

Place a rubber band on each of your student’s desks and have them make a zero out of it
Now place a heavy object like a pen or pencil above it with the



Now ask the students to pretend they are using zero to push on an object. Then ask, how the heck could you push something with nothing? Remeber, the roberband is supposed to be zero but how can zero of something (nothing) push something (the pen)? 


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