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+ or - |
STANDARD 4.1 (NUMBER AND NUMERICAL OPERATIONS) ALL STUDENTS WILL
DEVELOP NUMBER SENSE AND WILL PERFORM STANDARD NUMERICAL OPERATIONS AND
ESTIMATIONS ON ALL TYPES OF NUMBERS IN A VARIETY OF WAYS. |
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C.
Estimation |
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By the end of Grade
2, students will: |
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1.
Judge
without counting whether a set of objects has less than, more than, or
the same number of objects as a reference set. |
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2.
Determine
the reasonableness of an answer by estimating the result of computations
(e.g., 15 + 16 is not 211). |
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3.
Explore a
variety of strategies for estimating both quantities (e.g., the number
of marbles in a jar) and results of computation. |
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Building upon knowledge and
skills gained in preceding grades, by the end of Grade 3, students will: |
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1.
Judge without counting
whether a set of objects has less than, more than, or the same number of
objects as a reference set. |
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2.
Construct
and use a variety of estimation strategies (e.g., rounding and mental
math) for estimating both quantities and the result of computations. |
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3.
Recognize
when an estimate is appropriate, and understand the usefulness of an
estimate as distinct from an exact answer. |
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4.
Use estimation to determine whether the result of a
computation (either by calculator or by hand) is reasonable. |
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Building upon knowledge and
skills gained in preceding grades, by the end of Grade 4, students will: |
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1.
Judge
without counting whether a set of objects has less than, more than, or
the same number of objects as a reference set. |
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2.
Construct
and use a variety of estimation strategies (e.g., rounding and mental
math) for estimating both quantities and the results of computations. |
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3.
Recognize
when an estimate is appropriate, and understand the usefulness of an
estimate as distinct from an exact answer. |
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4.
Use
estimation to determine whether the result of a computation (either by
calculator or by hand) is reasonable. |
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Building upon knowledge and
skills gained in preceding grades, by the end of Grade 5, students will: |
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1.
Use a
variety of estimation strategies for both number and computation. |
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2.
Recognize
when an estimate is appropriate, and understand the usefulness of an
estimate as distinct from an exact answer. |
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3.
Determine
the reasonableness of an answer by estimating the result of operations. |
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4.
Determine
whether a given estimate is an overestimate or an underestimate. |
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Building upon
knowledge and skills gained in preceding grades, by the end of Grade 6,
students will: |
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1.
Use a
variety of strategies for estimating both quantities and the results of
computations. |
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2.
Recognize
when an estimate is appropriate, and understand the usefulness of an
estimate as distinct from an exact answer. |
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3.
Determine
the reasonableness of an answer by estimating the result of operations. |
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4.
Determine
whether a given estimate is an overestimate or an underestimate. |
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Building upon knowledge and
skills gained in preceding grades, by the end of Grade 7, students will: |
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1.
Use
equivalent representations of numbers such as fractions, decimals, and
percents to facilitate estimation. |
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Building upon knowledge and
skills gained in preceding grades, by the end of Grade 8, students will: |
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1.
Estimate square
and cube roots of numbers. |
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2.
Use
equivalent representations of numbers such as fractions, decimals, and
percents to facilitate estimation. |
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3.
Recognize the limitations of estimation and assess the
amount of error resulting from estimation. |
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Building upon
knowledge and skills gained in preceding grades, by the end of Grade 12,
students will: |
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1.
Recognize
the limitations of estimation, assess the amount of error resulting from
estimation, and determine whether the error is within acceptable
tolerance limits. |