Unit 3: Stories with Addition and Subtraction

Lesson 1: Modeling Addition with Place Value Blocks and Drawings

Learning Target: I can model addition with regrouping in any place using base ten blocks and drawings and determine the reasonableness of my answer.

• Video Links

  1. WCPSS: Addition with regrouping (two digit)

• Virtual Manipulatives

  • Base 10 blocks 2

  • Zoomable Number Line

Lesson 2: Modeling Addition with Regrouping Place Values

Learning Target: I can model addition with regrouping across two place values (ones and tens) and determine the reasonableness of my answer.

• Video Links

  1. WCPSS: Addition with regrouping (two digit)

  2. WCPSS: Addition with regrouping (three digit)

• Virtual Manipulatives

  • Base 10 blocks 2

Lesson 3: Modeling Subtraction with Place value Blocks and Drawings

Learning Target: I can model subtraction with ungrouping in any place using base ten blocks and drawings and determine the reasonableness of my answer.

• Video Links

  1. WCPSS: Subtraction with Ungrouping

• Virtual Manipulatives

  • Base 10 blocks 2

Lesson 4: Modeling Subtraction with Ungrouping Place Values

Learning Target: I can model subtraction with ungrouping in two place values (hundreds and tens) and check for the reasonableness of my answer.

• Video Links

  1. WCPSS: Subtraction with Ungrouping

• Virtual Manipulatives

  • Base 10 blocks 2

  • Math Learning Center

  • Interactive Base 10 Blocks

Lesson 5: Finding Sums using the Expanded Method

Learning Target: I can use the expanded form to decompose numbers and then find sums for addition and check for the reasonableness of my answers.

• Video Links

  1. WCPSS: Expanded Form Addition

  2. LearnZillion: Expanded Form Addition

• Virtual Manipulatives

  • Base 10 blocks 2

  • Place Value Cards

Lesson 6: Practice with Estimation & The Expanded Method to Find Sums

Learning Target: I can use expanded form to decompose numbers to find sums for addition and assess my reasonableness.

• Virtual Manipulatives

  1. Base 10 blocks 2

  2. Place Value Cards

Lesson 7: Finding Differences Using the Expanded Method

Learning Targets:

• I can use the expanded form to decompose numbers and then find differences for subtraction.

• I can check the reasonableness of my answers.

• Video Links

  1. WCPSS: Expanded Form Subtraction

• Virtual Manipulatives

  • Base 10 blocks 2

Lesson 8: Explain Subtraction Using the Expanded Method

Learning Target: I can explain the expanded method to solve for subtraction and determine the reasonableness of solutions.

• Video Links

  1. WCPSS: Expanded Form Subtraction

• Virtual Manipulatives

  • Base 10 blocks 2

Lesson 9: Practice Using the Expanded Method

Learning Target: I can use the expanded form to solve for subtraction and determine the reasonableness of my answers.

• Video Links

  1. WCPSS: Expanded Form Subtraction

• Virtual Manipulatives

  • Base 10 blocks 2

Lesson 10: Addition on a Number Line

Learning Target: I can model addition using a number line with accuracy.

• Video Links

  • WCPSS: Addition on a Number Line

  • Addition Using a Number Line

• Technology Links

  • Techno-Tortoise

• Virtual Manipulatives

  • Zoomable Math Line

  • ICTGame Number Line

  • Draggable Number Line

  • Math Learning Center: Interactive Number Line

Lesson 11: Subtraction on a Number Line

Learning Target: I can model subtraction using a number line with accuracy.

• Video Links

  1. WCPSS: Subtraction on a Number Line

  2. Learn Zillion: Solve subtraction problems using a number line

• Virtual Manipulatives

  • Zoomable Math Line

  • ICTGame Number Line

  • Draggable Number Line

  • Math Learning Center: Interactive Number Line

Lesson 12: Inverse Operations on a Number Line

Learning Target: I can estimate and solve addition and subtraction inverse operations using two different strategies.

• Video Links

  1. WCPSS: Addition on a Number Line

  2. WCPSS: Subtraction on a Number Line

• Technology Links

  • A Math Dictionary for Kids

• Virtual Manipulatives

  • Zoomable Math Line

Lesson 13: Exploring the Concept of Estimation

Learning Target: I can explore various estimation strategies to assess the reasonableness of answers.

• Video Links

  1. Study Jams: Estimation

  2. LearnZillion: Rounding in Real World Situations

• Technology Links

  • CyberChase Estimation

  • Interactive Estimator

  • Math Games: Estimation

  • How Many Marbles

• Virtual Manipulatives

  • Zoomable Math Line

Lesson 14: Estimation is Approximation