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- 4.NF.B.3aUnderstand addition and subtraction of fractions as joining and separating parts referring to the same whole.
- 4.NF.B.3bDecompose 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.
- 4.NF.B.3cAdd 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.
- 4.NF.B.3dSolve 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.

Modeling Adding and Subtracting Mixed Numbers

4th Grade Math

Â» Unit:

Fractions

Big Idea:Adding and subtracting mixed numbers can be modeled by using shapes.

All Hands In for Improper Fractions

4th Grade Math

Â» Unit:

Operations with Fractions

Big Idea:In this lesson, students explore the relationship between mixed numbers and improper fractions with a hands on activity.

Adding Mixed Numbers

4th Grade Math

Â» Unit:

Fractions

Big Idea:A mixed number can be solved by changing it to an improper fraction.

Rocking Operations with Fractions - Assessment

4th Grade Math

Â» Unit:

Operations with Fractions

Big Idea:In this lesson students spend the hour taking a written summative assessment of fraction concepts.

Inquiry with Mixed Numbers - How far did she run?

4th Grade Math

Â» Unit:

Operations with Fractions

Big Idea:In this inquiry based lesson students collaborate to solve engaging real world problems in order to add or multiply mixed numbers to whole numbers.

Tic Tac Toe - Subtracting Mixed Numbers

4th Grade Math

Â» Unit:

Operations with Fractions

Big Idea:In this lesson students work with a partner to play a tic tac toe game in order to practice the skill of subtracting mixed numbers. Students can use visual fraction model and number strategies in order to subtract mixed numbers.

Fractions Review

4th Grade Math

Â» Unit:

Fractions

Big Idea:To review skills learned about fractions, students can solve problems and play games.

Cats and Strawberries - Inquiry with Subtracting Mixed Numbers

4th Grade Math

Â» Unit:

Operations with Fractions

Big Idea:In this lesson, students review strategies for adding mixed numbers and then work through how to subtract mixed numbers in an inquiry type of approach.

Subtracting Mixed Numbers

4th Grade Math

Â» Unit:

Fractions

Big Idea:Students can use models to validate their answers to their subtraction problems of mixed numbers with like denominators.

Mixed Number Mystery

4th Grade Math

Â» Unit:

Operations with Fractions

Big Idea:Fractions operations

Who needs a Shave? - Line Plots

4th Grade Math

Â» Unit:

Measurment

Big Idea:In this lesson, students create line plots through a direct instruction approach and then answer questions using these line plots.

Adding Mixed Numbers

4th Grade Math

Â» Unit:

Operations with Fractions

Big Idea:In this lesson students work cooperatively to add mixed numbers within a context. Students practice justifying their thinking, or Math Practice 3 skills.

Measuring & Comparing the Lengths of Objects

4th Grade Math

Â» Unit:

Fractions

Big Idea:Students will use a ruler to measure everyday objects. Then, they will compare the lengths of the objects by adding and subtracting.

Fabulous Fraction Review with Computers

4th Grade Math

Â» Unit:

Operations with Fractions

Big Idea:In this lesson, students log into a free computer program in which they practice fourth grade fraction concepts and skills.

Shopping and Pondering Pounds and Ounces

4th Grade Math

Â» Unit:

Measurment

Big Idea:In this task, students will participate in an activity that helps them convert and add ounces and pounds.

4.NF.B.3a

Understand addition and subtraction of fractions as joining and separating parts referring to the same whole.

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.

4.NF.B.3c

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.

4.NF.B.3d

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.