iRubric: Decomposing and Composing Fractions to Add & Subtract rubric

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Decomposing and Composing Fractions to Add & Subtract Adding/Subtracting Fractions The students have been working on all the concepts leading up to adding/subtracting fractions. Comparing fractions with like denominators, making equivalent fractions, simplifying fractions, and now decomposing and composing fractions. Rubric Code: JX994A5 By jstlewis Ready to use Public Rubric Subject: Math Type: Assessment Grade Levels: K-5

Decomposing and Composing Fractions
	Beginning 1 pts	Developing 2 pts	Accomplished 3 pts	Exemplary 4 pts
De(Compose) the Fraction	Beginning The student does not know how to correctly decompose or compose the fractions with like denominators without assistance.	Developing Can only decompose a fraction into a sum of fractions with the same denominator in one way. Did not justify decompositions by using a visual fraction model.	Accomplished With minimal assistance the student somewhat understands how to decompose a fraction into a sum of fractions with the same denominator in more than one way. Justify decompositions by using a visual fraction model.	Exemplary The student fully understands to add the new numerators together, while the denominator stays the same, as well as adding the whole numbers. Decompose a fraction into a sum of fractions with the same denominator in more than one way. Justify decompositions by using a visual fraction model.