4th Grade Estimation ProblemsDate: 10/3/96 at 14:8:35 From: Anonymous Subject: Definition of terms What type of problem exemplifies "use order of magnitude in estimation" and "use compensation in estimation" at the fourth grade level of mathematics? These are two objectives on a test given to 4th grade students and sample problems for teachers to use must be constructed for practice. Can you give me a better definition or example? I have not found anyone who can answer my question - not even the people who wrote the specifications for the math test! Your help would be appreciated. Georgia R. Date: 10/3/96 at 13:10:8 From: Doctor Leigh Subject: Re: Definition of terms "Use order of magnitude in estimation" refers to having students decide, for example, if a picture of the start of the New York City Marathon contains either hundreds or thousands of people... Making the distinction between groupings of different magnitudes of the powers of 10. "Use of compensation in estimation" refers to students being able to recognize that squares will fit soundly together while other shapes will not. Also if you are estimating, say the number of items in a jar, and there are different shape items, the student should recognize that they will have to compensate for that. -Doctor Leigh Ann, The Math Forum Check out our web site! http://mathforum.org/dr.math/ Date: 10/3/96 at 14:10:47 From: Anonymous Subject: Re: Definition of terms Thanks so much. You have been a big help but I still cannot understand how a problem might be written that would test that type of skill. Date: 10/4/96 at 7:29:39 From: Doctor Leigh Subject: Re: Definition of terms I have seen examples where a picture is included that contains a large number of objects contained within it. The student is then supposed to estimate whether or not there are 10s, 100s or thousands within the picture. Research estimation at all levels and you should be able to find it. -Doctor Leigh Ann, The Math Forum Check out our web site! http://mathforum.org/dr.math/ Date: 10/4/96 at 18:48:26 From: Anonymous Subject: Re: definition of terms Thanks, you've been a great help. I have been successful in my search. |
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