Illinois Teach & Talk: Grade 4 - 4.NF.3

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Illinois Teach & Talk: Grade 4 - 4.NF.3

Description

Build fractions from unit fractions by applying and extending previous understandings of operations on whole numbers.
 
4.NF.3 Understand a fraction a/b with a>1 as a sum of fractions 1/b.
 
  • Understand addition and subtraction of fractions as joining and separating parts referring to the same whole.
  • Decompose a fraction into a sum of fractions with the same denominator in more than one way, recording each decomposition by an equation.  Justify decompositions, e.g., by using a visual fraction model.   
       Examples: 3/8=1/8 + 1/8 + 1/8; 3/8=1/8 + 2/8;
       2 1/8=1 +1 + 1/8=8/8 + 8/8 + 1/8.
  • Add and subtract mixed numbers with like denominators, e.g., by replacing each mixed number with an equivalent fraction, and/or by using properties of operations and the relationship between addition and subtraction.
  • Solve word problems involving addition and subtraction of fractions referring to the same whole and having like denominators, e.g., by using visual fraction models and equations to represent the problem.

Summary

Illinois Teach & Talk provides a grade 4 lesson plan with the 4.NF.3 learning standard.

Aligned Standards

Major Standards

  • 3. Understand a fraction a/b with a > 1 as a sum of fractions 1/b.

Supporting Standards

Additional Standards

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