4.NF.B.3b

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.

 
7 Lesson(s)
   

Teresa's Pizza (Fraction Decomposition)

4th Grade Math » Unit: Fractions
4th Grade Math » Unit: Fractions
Rose Monroe
Memphis, TN
Environment: Urban
 
Big Idea:

Fractions can be broken into sums of fractions.

 
Favorites (7)
 
Resources (16)
 
Reflections (1)
decomposing fractions
   

Decomposing Pizza Fractions

4th Grade Math » Unit: Fractions
4th Grade Math » Unit: Fractions
Kara Nelson
Environment: Urban
 
Big Idea:

Students will fold rectangular paper "pizzas" to prove that two fractions can look differently but have the same value.

 
Favorites (5)
 
Resources (41)
 
Reflections (1)
making observations
   

Improper Fractions and Mixed Numbers

4th Grade Math » Unit: Number & Operations-Fractions
4th Grade Math » Unit: Number & Operations-Fractions
Carol Redfield
Jackson, MS
Environment: Urban
 
Big Idea:

Given a set of mixed fractions students will be able to identify and write mixed numbers as improper fractions.

 
Favorites (4)
 
Resources (16)
 
Reflections (1)
improper fraction3
   

Exploring Unit Fractions 1/5, 1/6, 1/7

4th Grade Math » Unit: Fractions
4th Grade Math » Unit: Fractions
Kara Nelson
Environment: Urban
 
Big Idea:

By partitioning and adding unit fractions, students will gain a deeper understanding of the meaning of fractions.

 
Favorites (1)
 
Resources (57)
 
Reflections (1)
finding
   

Decomposing and Composing Mixed Fractions

4th Grade Math » Unit: Number & Operations-Fractions
4th Grade Math » Unit: Number & Operations-Fractions
Carol Redfield
Jackson, MS
Environment: Urban
 
Big Idea:

Given a set fraction amount students will be able to decompose into a sum of fractions in more than one way.

 
Favorites (2)
 
Resources (16)
 
Reflections (1)
wholes and fractions
   

Decomposing Submarine Sandwiches

4th Grade Math » Unit: Fractions
4th Grade Math » Unit: Fractions
Kara Nelson
Environment: Urban
 
Big Idea:

Students will decompose paper submarine sandwiches into fraction equations.

 
Favorites (11)
 
Resources (42)
 
Reflections (1)
student example eighths
   

Understanding Composing and Decomposing: Day 1

4th Grade Math » Unit: Fractions 2: Addition and Subtraction Concepts/ Mini unit
4th Grade Math » Unit: Fractions 2: Addition and Subtraction Concepts/ Mini unit
Mary Ellen Kanthack
Genoa City, WI
Environment: Rural
 
Big Idea:

Virtual Manipulatives is a dynamite ap that helps students quickly understand the composition and decomposition of fractions. This first day is an introduction and is just the right lesson to get them started at this Common Core Concept!

 
Favorites (2)
 
Resources (15)
 
Reflections (1)
two different ways to
Common Core Math
 
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