From: Marielouise (for Teacher2Teacher Service)
Date: Feb 27, 1999 at 12:57:25
Subject: Re: Rounding off-Estimation

Hi, Theresa,

  You mentioned that your student understood when you worked with
manipulatives.  You may want to try working with a number line.  Have the
student locate the number s/he wishes to round on the number line.  Then
measure which of two numbers that end in zero is closer to the number.  For
example 12 lies between 10 and 20.  Since 12 is closer to 10 it rounds down 
to
10.  Whereas 17 in the same interval will round up to 20.

I would allow the child to use the number line as long as is necessary.

-Marielouise, for the Teacher2Teacher service

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