Unit 1

Lesson 1 - Place Value

Place Value 10x

Millions

Place Value Blocks

Place Value Song

Lesson 2 - Number Form

Number Form

Expanded Form

Standard Form

Word Form

Lesson 3 - Rounding

Lesson 3

Use a numberline

Rounding Song

Benchmarks

Lesson 4 - Compare Numbers

Compare Place Values

Greater than or Less than Song

Compare Numbers

Compare and Order

Lesson 5 - Addition by Values

Understanding Place Value while adding

Adding 3 Digit Numbers Using the Place Value Strategy (No Regrouping)


Adding by Place Value Block

Math Expressions

Lesson 6 - Addition with Regrouping

Math Expressions

3 digit Addition with Regrouping

Addition with Regrouping

Math Antics

Lesson 7 - Adding Greater Numbers

Unit 1 Lesson 7

Regrouping with Addition

Math Mountain/Break-a-part Drawing

Lesson 8 - Estimate and Mental Math

Estimate the Sum and Difference

Find Friendly numbers

Compatible Numbers

Make a Ten to Add

Lesson 9 - Subtract from Thousands

Lesson 9

Subtracting Large Numbers

Subtracting Greater Numbers

Using Friendly Numbers

Subtraction with an Open Numberline

Subtraction on a Numberline

Add on subtraction

Add & Sub on a numberline

Other Concepts in this Unit 1

Solving Word Problems

Check Subtraction with adding

Using a numberline

Mental Math to Subtract