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Lesson Plans and Worksheets for Grade 4

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More Lessons for Grade 4

Common Core For Grade 4

Videos, solutions, and examples to help Grade 4 students learn how to decompose unit fractions using area models to show equivalence.

Common Core Standards: 4.NF.3b, 4.NF.4a, 4.NF.3a

Lesson 5 Concept Development

Problem 1: Draw an area model to illustrate that 1/5 is equal to 2/10.

Problem 2: Decompose 1/3 as 4/12 represented in an area model and as the sum and product of unit fractions.

Problem 3: Model 1/2 = 5/10 and represent the decomposition as the sum and product of unit fractions.

Lesson 5 Problem Set

- Draw horizontal lines to decompose each rectangle into the number of rows as indicated. Use the model to give the shaded area as both a sum of unit fractions and as a multiplication sentence.

a. 2 rows

b. 2 rows

c. 4 rows - Draw area models to show the decompositions represented by the number sentences below. Represent the decomposition as a sum of unit fractions and as a multiplication sentence.

a. 1/2 = 3/6

b. 1/2 = 4/8

c. 1/2 = 5/10

d. 1/3 = 2/6

e. 1/3 = 4/12

f. 1/3 = 3/12 - Explain why 1/12 + 1/12 + 1/12 is the same as 1/4.

Lesson 5 Homework

- Draw horizontal lines to decompose each rectangle into the number of rows as indicated. Use the model to give the shaded area as both a sum of unit fractions and as a multiplication sentence.

a. 3 rows

b. 2 rows

c. 4 rows - Draw area models to show the decompositions represented by the number sentences below. Represent the decomposition as a sum of unit fractions and as a multiplication sentence. a. 1/3 = 2/6

b. 1/3 = 3/9

c. 1/3 = 4/12

d. 1/3 = 5/15

e. 1/5 = 2/10

f. 1/5 = 3/15 - Explain why 1/12 + 1/12 + 1/12 + 1/12 is the same as 1/3.

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