Unit 5: Using Models to Add and Subtract Decimals and Fractions

Lesson 1:  Add Decimals Using Base-Ten Models

NC.5.NBT.7

NC.5.OA.2

5th Grade Unpacking Document

• I can use base-ten pieces and base-ten grids to solve addition word problems.

• • Video Links

    • Understanding Decimals

  • Virtual Manipulatives

    • Interactive Base Ten Blocks

    • Interactive Base Ten Blocks 2

Lesson 2:  Subtract Decimals Using Base-Ten Models

NC.5.NBT.7

NC.5.OA.2

5th Grade Unpacking Document

• I can use base-ten pieces and base-ten grids to solve subtraction word problems.

• • Video Links

    • Understanding Decimals

  • Virtual Manipulatives

    • Interactive Base Ten Blocks

    • Interactive Base Ten Blocks 2

Lesson 3:  Using a Number Line to Add & Subtract Decimals (Day 1)

NC.5.NBT.7

NC.5.OA.2

5th Grade Unpacking Document

• I can use open number lines to add and subtract decimals.

• • Virtual Manipulatives

    • Interactive Number Lines

Lesson 4:  Using a Number Line to Add & Subtract Decimals (Day 2)

NC.5.NBT.7

NC.5.OA.2

5th Grade Unpacking Document

• I can use open number lines to add and subtract decimals.

• • Virtual Manipulatives

    • Interactive Number Lines

Lesson 5:  Combo Meals

NC.5.NBT.7

NC.5.OA.2

5th Grade Unpacking Document

• I can use base-ten grids/pieces and open number lines to add and subtract decimals in a real-world context.

• • Technology Links

    • Taco Bell Menu

  • Virtual Manipulatives

    • Interactive Base Ten Blocks

    • Interactive Base Ten Blocks 2

    • Interactive Number Lines

Lesson 6:  Ketchup 3-Act Task

NC.5.NBT.7

NC.5.OA.2

5th Grade Unpacking Document

• I can add and subtract decimals to solve a given problem.

• • Technology Links

    • Tomato-Tomato 3-Act Introduction

    • 3-Act Solution

Lesson 7:  Explore Strategies

NC.5.NBT.7

NC.5.OA.2

5th Grade Unpacking Document

• I can use knowledge of decomposing numbers to add and subtract decimal numbers.

• I can use knowledge of the associative property to solve.

• • Technology Links

    • Hotel Decimalfornia Game

Lesson 8:  Batting Averages

NC.5.NBT.7

NC.5.OA.2

5th Grade Unpacking Document

• I can determine whether to add or subtract based on the context of a word problem and use estimation to the reasonableness of solutions.

• None

Lesson 9:  Analyze This

NC.5.NBT.7

NC.5.OA.2

5th Grade Unpacking Document

• I can apply understanding of adding and subtracting decimals using models, drawing, or strategies based on place value to error analysis tasks.

• • None

Lesson 10:  Tokyo 2020-Be Fast or Be Last!

NC.5.NBT.7

NC.5.OA.2

5th Grade Unpacking Document

• I can use knowledge of place value to add and subtract decimal numbers to solve real world problems & estimate the reasonableness of solutions. 

• • Video Links

    • Usain Bolt Video

    • Michael Phelps Relay

Lesson 11:  Use Benchmarks to Estimate

NC.5.NF.1

NC.5.OA.2

5th Grade Unpacking Document

• I can use benchmark fractions to estimate sums and differences. 

• • None

Lesson 12:  Assess the Reasonableness

NC.5.NF.1

NC.5.OA.2

5th Grade Unpacking Document

• I can use benchmark fractions and number sense to estimate mentally and assess the reasonableness of solutions. 

• • None

Lesson 13:  Add & Subtract Fractions with Area Models

NC.5.NF.1

NC.5.OA.2

5th Grade Unpacking Document

• I can use area models to add and subtract fractions. 

• • Video Links

    • Adding Fractions with Area Models

    • Subtracting Fractions with Area Models

Lesson 14:  Add & Subtract Fractions with Number Lines

NC.5.NF.1

NC.5.OA.2

5th Grade Unpacking Document

• I can use number lines to add and subtract fractions. 

• • Video Links

    • Adding Fractions with Area Models

    • Subtracting Fractions with Area Models

    • Visual Fractions-Subtract with Number Line Models

Lesson 15:  Pass the Problem: Add & Subtract Fractions

NC.5.NF.1

NC.5.OA.2

5th Grade Unpacking Document

• I can use area models to add and subtract fractions. 

• • Video Links

    • Adding Fractions with Area Models

    • Subtracting Fractions with Area Models

Lesson 16:  Add & Subtract Mixed Numbers with Models

NC.5.NF.1

NC.5.OA.2

5th Grade Unpacking Document

• I can use area models to add and subtract mixed numbers. 

• • Video Links

    • Adding Mixed Numbers with Area Models

    • Subtracting Mixed Numbers with Area Models

Lesson 17:  Use Number Lines to Add & Subtract Mixed Numbers

NC.5.NF.1

NC.5.OA.2

5th Grade Unpacking Document

• I can use number lines to add and subtract mixed numbers. 

• Video Links

  • Adding Fractions with Number Lines

  • Subtract Fractions with Number Lines

• Technology Links

  • Visual Fractions-Add with Number Line Models

  • Visual Fractions-Subtract with Number Line Models

Lesson 18:  Apply Strategies for Adding & Subtracting Fractions

NC.5.NF.1

NC.5.OA.2

5th Grade Unpacking Document

• I can use a variety of strategies (area models & number lines) to add and subtract fractions to solve word problems. 

• • Video Links

    • Adding Mixed Numbers with Area Models

    • Subtracting Mixed Numbers with Area Models

    • Adding Fractions with Number Lines

    • Subtract Fractions with Number Lines

  • Technology Links

    • Visual Fractions-Add with Number Line Models

    • Visual Fractions-Subtract with Number Line Models

Lesson 19:  Connect Models to Algorithm

NC.5.NF.1

NC.5.OA.2

5th Grade Unpacking Document

• I can use models to make connections to the algorithm for adding and subtracting fractions. 

• • Video Links

    • Adding Mixed Numbers with Area Models

    • Subtracting Mixed Numbers with Area Models

Lesson 20:  Add & Subtract Fractions Review

NC.5.NF.1

NC.5.OA.2

5th Grade Unpacking Document

• I can use models to make connections to the algorithm for adding and subtracting fractions. 

• • None

Lesson 21:  Grocery Excursion - Day 1 of 3

NC.5.NF.1

NC.5.NBT.7

NC.5.OA.2

5th Grade Unpacking Document

• I can work with a partner (or small group) to apply knowledge of adding and subtracting fractions and decimals to a real-world scenario. 

• • None

Lesson 22:  Grocery Excursion - Day 2 of 3

NC.5.NF.1

NC.5.NBT.7

NC.5.OA.2

5th Grade Unpacking Document

• I can work with a partner (or small group) to apply knowledge of adding and subtracting fractions and decimals to a real-world scenario. 

• • None

Lesson 23:  Grocery Excursion - Day 3 of 3

NC.5.NF.1

NC.5.NBT.7

NC.5.OA.2

5th Grade Unpacking Document

• I can work with a partner (or small group) to apply knowledge of adding and subtracting fractions and decimals to a real-world scenario. 

• • None

Lesson 24: Sum It Up!

NC.5.NF.1

NC.5.NBT.7

NC.5.OA.2

5th Grade Unpacking Document

• I can work with a partner (or small group) to apply knowledge of adding and subtracting fractions and decimals to a real-world scenario. 

• • Technology Links

    • Printable Placemats