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iRubric: Adding/Subtracting Fractions rubric
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Adding/Subtracting Fractions
Adding/Subtracting Fractions
The students have been working on all the concepts leading up to adding/subtracting fractions. Comparing fractions with unlike denominators, making equivalent fractions, simplifying fractions, and now adding/subtracting fractions
Rubric Code:
P8C57C
By
ameibauer
Ready to use
Public Rubric
Subject:
Math
Type:
Assessment
Grade Levels:
K-5
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Adding/Subtracting Fractions
Beginning
1 pts
Developing
2 pts
Accomplished
3 pts
Exemplary
4 pts
Find LCM of Denominators
Beginning
With intensive assistance, the student somewhat understands the concept of listing the multiples of the denominators, but their work is not complete.
Developing
With some assistance, the student somewhat understands the concept of listing the multiples of the denominators, but their work is not complete.
Accomplished
With minimal assistance, the student understands and lists the multiples of the denominators, showing the LCM by circling it, or making it the fractions new denominator.
Exemplary
The student fully understands and lists the multiples of the denominators, showing the LCM by circling it, or making it the fractions new denominator.
Make Equivalent Fractions
Beginning
With intensive assistance, the student somewhat understands how change the fractions to equivalent fractions with the same denominators.
Developing
With some assistance, the student somewhat understands the concept of making equivalent fraction, but their understanding is not complete. They make may the new denominator the LCM but is not sure about how to get the new numerator.
Accomplished
With minimal assistance the student is able to make equivalent fractions from making the LCM of the unlike denominators the new denominators and then multiples the numerator by the same number they multiplied their old denominator by to get their new denominator.
Exemplary
The student is able to make equivalent fractions from making the LCM of the unlike denominators the new denominators and then multiples the numerator by the same number they multiplied their old denominator by to get their new denominator.
Add/Subtract the Fraction
Beginning
The student does not know how to correctly add or subtract the fractions with unlike denominators without assistance.
Developing
With some assistance the student somewhat understands that when the denominator is different, they need to make equivalent fractions. They make an attempt to find the new numerators/denominators and adds or subtracts only the numerator.
Accomplished
With minimal assistance the student somewhat understands that when the denominator is different, they need to make equivalent fractions. They make an attempt to find the new numerators/denominators and adds or subtracts only the numerator.
Exemplary
The student fully understands to add the new numerators together, while the denominator stays the same, as well as adding the whole numbers.
Simplify Fractions
Beginning
The student does not know or does not simplify fractions without assistance.
Developing
With some assistance the student may somewhat understand to list the factors of the numerator and/or denominator. An attempt is made to find the common factors and divide the numerator/denominator by the common factors, but the factors may not be in simplest form.
Accomplished
With minimal assistance the student is able to list the greatest common factors of the numerator and denominator and then dividing the numerator and denominator by the GCF to come up with the most simplified version of the fraction.
Exemplary
The student is able to list the greatest common factors of the numerator and denominator and then dividing the numerator and denominator by the GCF to come up with the most simplified version of the fraction.
Keywords:
Fractions
Subjects:
Math
Types:
Assessment
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