
Page

Mr.
Yen's Videos 
Youtube Video Names and Links 
Chapter 3  Addition 

Location: Adding and Subracting Whole Numbers 

Lesson 1  Hands On: Estimate and Check 
52 


Lesson 2  Addition Properties 
54 
Addition Properties 
Addition
Properties 
Lesson 3  Estimate Sums 
58 
Addition Estimation with Whole Numbers 
Estimation When Adding Whole Numbers

Lesson 4  Add Whole Numbers 
62 
Adding Whole Numbers 
Adding Whole Numbers

Lesson 5  Problem Solving: Sawdust Art
Festival 
64 
Practice Addition with Whole Numbers w/Estimation

Addition of Whole Numbers with Estimation Practice

Review/Test 
68 






Chapter 4  Subtraction 

Location: Adding and Subracting Whole Numbers 

Lesson 1  Hands On: Model Subraction
from 2,000 
72 


Lesson 2  Estimate Differences 
74 
Estimating Differences of Whole Numbers

Estimating Differences of Whole Numbers 
Lesson 3  Subtract Whole Numbers 
78 
Subtraction with Whole Numbers 
Subtraction of Whole Numbers 
Lesson 4  Subtract Across Zeroes 
82 
Subtraction with Whole Numbers Across Zeroes 
Whole Number Subtraction Across Zeroes 
Lesson 5  PS: Too Much or Too Little
Information 
84 
Practice Subtraction with Whole Numbers w/Estimation 
Subtraction with Estimation Practice 
Review/Test 
88 






Chapter 5  Expressions and
Equations 

Located Under Algebra 

Lesson 1  Hands On; Expressions aand
Parentheses 
92 


Lesson 2  Write and Evaluate
Expressions 
94 
Simplifying Expressions Involving Addition and
Subtraction 
Expressions, Equations, and Inequalities with Addition and Subtraction 
Lesson 3  Expressions, Equations, and
Inequalities 
98 
Equations, Expressions, and Inequalities 
Comparing Expressions
Involving Addition and Subtraction 
Lesson 4  Add Equals to Equals 
102 


Lesson 5  PS: Break a Problem Into
Parts 
104 


Review/Test 
110 

