Essential Questions:
Unit 3 instructional time is focused on these power standards:
4.NF.A.1 Explain why a fraction a/b is equivalent to a fraction (n × a)/(n × b) by using visual fraction models, with attention to how the number and size of the parts differ even though the two fractions themselves are the same size. Use this principle to recognize and generate equivalent fractions.
4.NF.A.2 Extend understanding of fraction equivalence and ordering. Compare two fractions with different numerators and different denominators, e.g., by creating common denominators or numerators, or by comparing to a benchmark fraction such as 1/2. Recognize that comparisons are valid only when the two fractions refer to the same whole. Record the results of comparisons with symbols >, =, or <, and justify the conclusions, e.g., by using a visual fraction model.
4.NF.B.3 Understand a fraction a/b with a > 1 as a sum of fractions 1/b.
Unit 3 instruction is supported by these standards:
4.OA.A.3 Use the four operations with whole numbers to solve problems. Solve multistep word problems posed with whole numbers and having wholenumber answers using the four operations, including problems in which remainders must be interpreted. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.
 Would you rather have one slice of pizza from a circle shaped pizza or a rectangular shaped pizza?
 How can I combine my fractional pieces with someone else's fractional pieces?
 A visual model can be used to create, compare, and combine fractions.
 Nonunit fractions are the sum of unit fractions.
Unit 3 instructional time is focused on these power standards:
4.NF.A.1 Explain why a fraction a/b is equivalent to a fraction (n × a)/(n × b) by using visual fraction models, with attention to how the number and size of the parts differ even though the two fractions themselves are the same size. Use this principle to recognize and generate equivalent fractions.
4.NF.A.2 Extend understanding of fraction equivalence and ordering. Compare two fractions with different numerators and different denominators, e.g., by creating common denominators or numerators, or by comparing to a benchmark fraction such as 1/2. Recognize that comparisons are valid only when the two fractions refer to the same whole. Record the results of comparisons with symbols >, =, or <, and justify the conclusions, e.g., by using a visual fraction model.
4.NF.B.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.
Unit 3 instruction is supported by these standards:
4.OA.A.3 Use the four operations with whole numbers to solve problems. Solve multistep word problems posed with whole numbers and having wholenumber answers using the four operations, including problems in which remainders must be interpreted. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.
What To TeachUnit 3 Outline
Preassessment Introduce Real World Experience & Task 1 Topic 1 Fraction Equivalence (3 days)

Lesson Ideas 
Student PRactice 
Topic 3: Fraction Addition & Subtraction (2 days)

Topic 4: MixedNumber Addition & Subtraction (4 days)
Topic 5: Solve Fraction Word Problems (4 days)
Post Assessment and Reflection 
Illustrative Mathematics  Writing Mixed Numbers as Equivalent Fractions
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