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Topic: How teaching factors rather than multiplicand & multiplier
confuses kids!

Replies: 32   Last Post: Nov 17, 2012 11:13 AM

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Joe Niederberger

Posts: 3,043
Registered: 10/12/08
Re: How teaching factors rather than multiplicand & multiplier
confuses kids!

Posted: Nov 13, 2012 11:52 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

Gary Tupper writes:
>Consider the function:
F: y= x^2 if x is rational; -x^2 if x is irrational
Appears to be continuous at a single point (0,0) only. Can be drawn
without lifting the pencil - as long as the pencil stays still.

Come again? Do you mean -(x^2)? And by "pencil stays still" are you referring to retracing? If we are being that literal how does one get the pencil to go to infinity and back? Nice trick though.

Joe N


Date Subject Author
11/12/12
Read Re: How teaching factors rather than multiplicand & multiplier
confuses kids!
kirby urner
11/12/12
Read Re: How teaching factors rather than multiplicand & multiplier confuses kids!
Robert Hansen
11/12/12
Read Re: How teaching factors rather than multiplicand & multiplier
confuses kids!
kirby urner
11/12/12
Read Re: How teaching factors rather than multiplicand & multiplier
confuses kids!
kirby urner
11/12/12
Read Re: How teaching factors rather than multiplicand & multiplier confuses kids!
Robert Hansen
11/12/12
Read Re: How teaching factors rather than multiplicand & multiplier
confuses kids!
kirby urner
11/12/12
Read Re: How teaching factors rather than multiplicand & multiplier confuses kids!
Robert Hansen
11/12/12
Read Re: How teaching factors rather than multiplicand & multiplier
confuses kids!
kirby urner
11/12/12
Read Re: How teaching factors rather than multiplicand & multiplier confuses kids!
Robert Hansen
11/13/12
Read Re: How teaching factors rather than multiplicand & multiplier
confuses kids!
Joe Niederberger
11/13/12
Read Re: How teaching factors rather than multiplicand & multiplier confuses kids!
Robert Hansen
11/13/12
Read Re: How teaching factors rather than multiplicand & multiplier confuses kids!
Robert Hansen
11/13/12
Read Re: How teaching factors rather than multiplicand & multiplier
confuses kids!
Joe Niederberger
11/13/12
Read Re: How teaching factors rather than multiplicand & multiplier
confuses kids!
Joe Niederberger
11/13/12
Read Re: How teaching factors rather than multiplicand & multiplier
confuses kids!
Joe Niederberger
11/14/12
Read Re: How teaching factors rather than multiplicand & multiplier confuses kids!
Robert Hansen
11/14/12
Read Re: How teaching factors rather than multiplicand & multiplier
confuses kids!
kirby urner
11/15/12
Read Re: How teaching factors rather than multiplicand & multiplier
confuses kids!
kirby urner
11/15/12
Read Re: How teaching factors rather than multiplicand & multiplier confuses kids!
Robert Hansen
11/15/12
Read Re: How teaching factors rather than multiplicand & multiplier
confuses kids!
kirby urner
11/15/12
Read Re: How teaching factors rather than multiplicand & multiplier confuses kids!
Robert Hansen
11/16/12
Read Re: How teaching factors rather than multiplicand & multiplier confuses kids!
kirby urner
11/16/12
Read Re: How teaching factors rather than multiplicand & multiplier confuses kids!
Robert Hansen
11/16/12
Read Re: How teaching factors rather than multiplicand & multiplier
confuses kids!
kirby urner
11/15/12
Read Re: How teaching factors rather than multiplicand & multiplier
confuses kids!
Joe Niederberger
11/15/12
Read Re: How teaching factors rather than multiplicand & multiplier confuses kids!
Robert Hansen
11/16/12
Read Re: How teaching factors rather than multiplicand & multiplier
confuses kids!
Joe Niederberger
11/17/12
Read Re: How teaching factors rather than multiplicand & multiplier confuses kids!
Robert Hansen
11/16/12
Read Re: How teaching factors rather than multiplicand & multiplier
confuses kids!
Joe Niederberger
11/17/12
Read Re: How teaching factors rather than multiplicand & multiplier confuses kids!
Robert Hansen
11/16/12
Read Re: How teaching factors rather than multiplicand & multiplier
confuses kids!
Joe Niederberger
11/17/12
Read Re: How teaching factors rather than multiplicand & multiplier confuses kids!
Robert Hansen

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