Grade 3MathTEKS 3.3D

Grade 3 Math TEKS 3.3D:Composing and Decomposing Fractions

Free, teacher-ready lessons and worksheets for Composing and Decomposing Fractions in Grade 3 Math, fully aligned to Texas TEKS 3.3D.

Compose and decompose a fraction a/b with a numerator greater than zero and less than or equal to b as a sum of parts 1/b

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Lessons Available
10
Worksheets Available
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      Grade 3 Math TEKS Lessons

      TEKS 3.3D: Composing and Decomposing Fractions

      • Compose Fractions

        About this lesson

        Learning Target: I can compose a fraction as a sum of unit fractions.

        Focuses On:

        • Using unit fractions to compose a larger fraction with the same denominator
        • Adding unit fractions in context of a word problem

        Builds On:

        This is the first time students are seeing this skill.

        Next Level:

        While there is no direct correlation to a 4th grade standard, 3.3D prepares students to understand unit fractions and add and subtract fractions.

        Read More:

        This lesson is designed to support student understanding of composing fractions.


        The two instructional blocks in this lesson focus on adding unit fractions and real world problems.  


        In the first instructional block, students compose fractions by adding unit fractions with the same denominator.


        The second instructional block focuses on real world situations where you need to combine parts of a set or parts of a whole in order to find a solution.


        Scaffolds and supports such as models and pictorial representations are intentionally built throughout the lesson to support conceptual learning.  

        Grade 3MathTEKS 3.3D

      • Decompose Fractions

        About this lesson

        Learning Target: I can decompose a fraction into a sum of unit fractions with the same denominator.

        Focuses On:

        • Taking a larger fraction and decomposing it into a sum of unit fractions
        • Using models to support understanding

        Builds On:

        This is the first time students are seeing this skill.

        Next Level:

        While there is no direct correlation to a 4th grade standard, 3.3D prepares students to understand unit fractions and add and subtract fractions.

        Read More:

        This lesson is designed to support student understanding of decomposing a larger fraction into a sum of unit fractions.


        The two instructional blocks in this lesson focus on decomposing fractions and unit fractions-groups


        In the first instructional block, students decompose fractions by breaking a larger fraction into a sum of unit fractions.


        The second instructional block has students write addition expressions with unit fractions based on real world problems involving groups.


        Scaffolds and supports such as models and pictorial representations are intentionally built throughout the lesson to support conceptual learning.  

        Grade 3MathTEKS 3.3D

      Grade 3 Math TEKS Worksheets

      TEKS 3.3D: Composing and Decomposing Fractions

      See all 10 worksheets

      • Equal Shares of Identical Wholes

        Grade 3MathTEKS 3.3D

      • Compose Fractions

        Grade 3MathTEKS 3.3D

      • Decompose Fractions

        Grade 3MathTEKS 3.3D

      • Full Topic: Compose and Decompose Fractions

        Grade 3MathTEKS 3.3D

      • Full Topic: Compose and Decompose Fractions

        Grade 3MathTEKS 3.3D

      • Fraction Shares Using Models

        Grade 3MathTEKS 3.3D

      • Skill Builder: Fraction Shares Using Models

        Grade 3MathTEKS 3.3D

      • Skill Builder: Compose Fractions

        Grade 3MathTEKS 3.3D

      • Skill Builder: Decompose Fractions

        Grade 3MathTEKS 3.3D

      • Skill Builder: Equal Shares of an Identical Whole

        Grade 3MathTEKS 3.3D

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      Frequently Asked Questions

      How do you teach Composing and Decomposing Fractions to 3rd graders?

      To teach Composing and Decomposing Fractions to 3rd grade Math students, start with concrete, hands-on models, then move to pictorial representations before abstract notation. TEKS 3.3D asks students to compose and decompose a fraction a/b with a numerator greater than zero and less than or equal to b as a sum of parts 1/b. Crystal Instruction's free ClearLessons for 3.3D walk through this progression with modeling, guided practice, and built-in checks for understanding, while the ClearSheets provide scaffolded practice. You can download both free on this page.

      What is 3.3D in 3rd grade Math?

      TEKS 3.3D is a 3rd grade Math standard for Composing and Decomposing Fractions. It requires students to compose and decompose a fraction a/b with a numerator greater than zero and less than or equal to b as a sum of parts 1/b. It is part of the Texas Essential Knowledge and Skills (TEKS) for Grade 3 Math.

      Where can I find free TEKS 3.3D lessons and worksheets?

      You can download free TEKS 3.3D lessons and worksheets directly on this page — no login or account required. Crystal Instruction provides free PDF versions of our Composing and Decomposing Fractions ClearLessons and ClearSheets for Grade 3 Math, and each one is also available as an interactive lesson inside the full Crystal Instruction platform.

      What skills are included in 3rd grade Composing and Decomposing Fractions?

      TEKS 3.3D (Composing and Decomposing Fractions) covers the following 3rd grade Math skills: students learn to compose and decompose a fraction a/b with a numerator greater than zero and less than or equal to b as a sum of parts 1/b. Free resources for this standard include Compose Fractions, Decompose Fractions.

      How is TEKS 3.3D assessed on STAAR?

      TEKS 3.3D is eligible for assessment on the Texas STAAR test for Grade 3 Math. Every Crystal Instruction ClearSheet for 3.3D is STAAR-aligned, and our ClearLessons are built to STAAR rigor using released STAAR test items — so students practice Composing and Decomposing Fractions in the same format and level of difficulty they will see on the test.