Unit 5: Adding and Subtracting within 1,000

Lesson 1:  Puzzle Me 10 or 100 More and Less

NC.2.NBT.8

2nd Grade Unpacking Document

• I can mentally add or subtract 10 or 100 from a given number between 100 and 900.

• Video Links:

  • NumbeRock Adding and Subtracting by 10 and 100

• Technology Resources:

  • Interactive Number Chart

Lesson 2:  Garden Party

NC.2.NBT.8

2nd Grade Unpacking Document

• I can mentally add or subtract 10 or 100 from a given number between 100 and 900.

• Video Links:

  • NumbeRock Adding and Subtracting by 10 and 100

• Technology Resources:

  • Interactive Number Chart

Lesson 3:  10 or 100 More and Less Journaling

NC.2.NBT.8

2nd Grade Unpacking Document

• I can mentally add or subtract 10 or 100 from a given number between 100 and 900.

• Video Links:

  • NumbeRock Adding and Subtracting by 10 and 100

Lesson 4:  Two-Digit Number Totals

NC.2.NBT.6

2nd Grade Unpacking Document

• I can add three two-digit numbers using place value pieces.

• WCPSS Number Place Value Addition with Regrouping Two Digit Numbers

• Virtual Manipulatives

  • Number Pieces

Lesson 5:  What’s the Sum?

NC.2.NBT.6

2nd Grade Unpacking Document

• I can add three two-digit numbers using a number line to show a place value strategy.

• Virtual Manipulatives

  • Number Line

Lesson 6:  Altogether Now

NC.2.NBT.6

2nd Grade Unpacking Document

• I can add three two-digit numbers using a place value drawing and number line to show a place value strategy.

• Video Links:

  • WCPSS Representing a Number with Proof Drawings

Lesson 7:  Association Station

NC.2.NBT.6

2nd Grade Unpacking Document

• I can add three two-digit numbers by using the associative property of addition to simplify the addition.

• Video Links:

  • WCPSS Associative Property of Addition

Lesson 8:  Addition with Base Ten Place Value Blocks

NC.2.NBT.7

2nd Grade Unpacking Document

• I can add 2 three-digit numbers using base ten blocks.

• Video Links:

  • WCPSS Addition Using Base Ten Place Value Blocks

• Virtual Manipulatives:

  • Number Pieces

Lesson 9:  Build That Addition Problem!

NC.2.NBT.7

2nd Grade Unpacking Document

• I can add 2 three-digit numbers using base ten blocks.

• Video Links:

  • WCPSS Addition Using Base Ten Place Value Blocks

• Virtual Manipulatives:

  • Number Pieces

Lesson 10:  Addition with Proof Drawings

NC.2.NBT.7

2nd Grade Unpacking Document

• I can add two three-digit numbers using a proof drawing.

• Video Links:

  • WCPSS 3-digit addition with proof drawings 

Lesson 11:  Addition Using Expanded Method

NC.2.NBT.7

2nd Grade Unpacking Document

• I can add two three-digit numbers using the expanded method.

• Video Links:

  • WCPSS 3-digit Addition using the Expanded Method 

Lesson 12:  Adding Using Number Lines (Day 1 of 2)

NC.2.NBT.7

2nd Grade Unpacking Document

• I can add two three-digit numbers using a number line.

• Video Links:

  • WCPSS 3-digit Addition using a Number Line 

• Virtual Manipulatives:

  • Number Line

Lesson 13:  Addition Using Number Lines (Day 2 of 2)

NC.2.NBT.7

2nd Grade Unpacking Document

• I can add two three-digit numbers using a number line.

• Video Links:

  • WCPSS 3-digit Addition using a Number Line 

• Virtual Manipulatives:

  • Number Line

Lesson 14:  Three-Digit Journaling

NC.2.NBT.7

2nd Grade Unpacking Document

• I can add two three-digit numbers using a number line, proof drawing or expanded form.

• Video Links:

  • WCPSS 3-digit Addition using a Number Line 

  • WCPSS 3-digit addition with proof drawings 

  • WCPSS 3-digit Addition using the Expanded Method

• Virtual Manipulatives:

  • Number Line

Lesson 15: Subtraction with Base Ten Place Value Blocks (Day 1 of 2)

NC.2.NBT.7

2nd Grade Unpacking Document

• I can subtract two three-digit numbers using place value blocks.

• Video Links:

  • WCPSS 3-digit subtraction using base ten place value blocks 

• Virtual Manipulatives:

  • Number Pieces

Lesson 16: Subtraction with Base Ten Place Value Blocks (Day 2 of 2)

NC.2.NBT.7

2nd Grade Unpacking Document

• I can subtract two three-digit numbers using place value blocks.

• Video Links:

  • WCPSS 3-digit subtraction using base ten place value blocks 

• Virtual Manipulatives:

  • Number Pieces

Lesson 17: Subtraction with Proof Drawings

NC.2.NBT.7

2nd Grade Unpacking Document

• I can subtract two three-digit numbers using place value blocks and proof drawings.

• Video Links:

  • WCPSS 3-digit subtraction using base ten place value blocks 

  • WCPSS 3-digit subtraction with proof drawings 

• Virtual Manipulatives:

  • Number Pieces

Lesson 18: Number Line Subtraction with Three-Digit Numbers (Day 1 of 2)

NC.2.NBT.7

2nd Grade Unpacking Document

• I can subtract 2 three-digit numbers using a number line.

• Video Links:

  • WCPSS 3-digit subtraction using a number line 

• Virtual Manipulatives:

  • Number Line

Lesson 19: Number Line Subtraction with Three-Digit Numbers (Day 2 of 2)

NC.2.NBT.7

2nd Grade Unpacking Document

• I can subtract 2 three-digit numbers using a number line.

• Video Links:

  • WCPSS 3-digit subtraction using a number line 

• Virtual Manipulatives:

  • Number Line

Lesson 20: Two Points Determine a Number Line

NC.2.NBT.7

2nd Grade Unpacking Document

• I can subtract 2 three-digit numbers using a number line.

• Video Links:

  • WCPSS 3-digit subtraction using a number line 

• Virtual Manipulatives:

  • Number Line

Lesson 21: Subtraction Strategy Review

NC.2.NBT.7

2nd Grade Unpacking Document

• I can subtract 2 three-digit numbers using a multiple strategies.

• Video Links:

  • WCPSS 3-digit subtraction using a number line 

  • WCPSS 3-digit subtraction using base ten place value blocks 

  • WCPSS 3-digit subtraction with proof drawings 

• Virtual Manipulatives:

  • Number Line

  • Number Pieces

Lesson 22: Three-Digit Subtraction Journaling

NC.2.NBT.7

2nd Grade Unpacking Document

• I can subtract 2 three digit numbers using a variety of strategies.

• Video Links:

  • WCPSS 3-digit subtraction using a number line 

  • WCPSS 3-digit subtraction using base ten place value blocks 

  • WCPSS 3-digit subtraction with proof drawings 

• Virtual Manipulatives:

  • Number Line

  • Number Pieces

Lesson 23: “Spring” Into Problem Solving

NC.2.OA.1

2nd Grade Unpacking Document

• I can solve word problems by using manipulatives or drawings. 

• I can write an equation that represents the problem.

• Video Links:

  • How to Solve a One-Step Problem Using the Three Reads Strategy

  • How to Solve Word Problems with Bar Models

  • Bar Model for Beginners

• Virtual Manipulatives

  • Number Line

  • Number Pieces

Lesson 24: Exploring the “Adding Up” Strategy

NC.2.OA.1

2nd Grade Unpacking Document

• I can solve problems using the adding up and/or number line strategy.

• Video Links:

  • WCPSS Adding Up to Four Two Digit Numbers

Lesson 25: Down by the Park

NC.2.OA.1

2nd Grade Unpacking Document

• I can solve comparison problems to find the unknown addend.

• Video Links:

  • Khan Academy Comparison Word Problems

Lesson 26: Problem Types Journaling

NC.2.OA.1

2nd Grade Unpacking Document

• I can solve a variety of problems to find the unknown addend.

• Video Links:

  • WCPSS Addition and Subtraction Change Unknown