4th Grade Math Expressions Lesson Screencasts
Look for the unit and lesson number that you missed or have questions about and click on it to watch a screencast!
Unit 1
1-6 Make New Groups for Addition
1-8 Estimation and Mental Math
1-9 Subtracting Thousands
1-10 Subtraction Undoes Addition
1-11 Subtracting Greater Numbers and "Adding Up" to Check Subtraction
1-12 Practice Addition & Subtraction: 2-Step Problems
1-13 Problem Solving with Greater Numbers
Review: Rounding Numbers to the Nearest 10, 100, and 1000
Unit 2
2-1 Arrays and Area Models
2-2 Connect Place Value & Multiplication
2-3 Mental Math and Multiplication
2-4 Model 1-Digit by 2-Digit Multiplication **The 1st slide on this video says 2-3...it's not, it is 2-4...OOPS!**
2-5 Estimate Products
2-6 Use Place Value to Multiply
2-7 Algebraic Notation Method
2-8 Compare Methods of Multiplication (1-Digit by 2-Digit)
2-9 Discussing Different Multiplication Methods
2-10 1-Digit by 3-Digit Multiplication
2-11 Multistep Word Problems
2-12 Two-Digit by Two-Digit Multiplication
2-15 Practice with Multiplication
2-16 Multiply 1-Digit Numbers by 4-Digit Numbers
2-17 Shortcut Method
Unit 3
3-1 Divide With Remainders
3-2 Relate 3-Digit Multiplication with Division
3-3 Part 1: Discuss 2-Digit and 4-Digit Quotients
3-3 Part 2
3-4 Digit by Digit Method
3-8 Estimate to Check Quotients
3-9 Making Sense of Remainders
3-10 Mixed Word Problems
Unit 4
4-1 Properties & Algebraic Notation
4-2 Situation & Solution Equations (Addition/Subtraction)
4-3 Situation & Solution Equations (Multiplication/Division)
4-4 Multiplication Comparisons
4-5 Discuss Comparison Problems
4-6 Graphs and Comparison Problems
4-7 Solve Two-Step Problems
4-8 Solve Multi-Step Problems
4-9 Practice with Multi-Step Problems
4-10 Factors and Prime Numbers
4-11 Analyze Patterns
Unit 5
5-1 Measuring Length
5-2 Metric Measures of Liquid Volume and Mass
5-3 Units of Time (Part 1)
5-3 Units of Time (Part 2)
5-4 Customary Measures of Length
5-5 Customary Measures of Weight and Liquid Volume
5-6 Perimeter and Area of Rectangles
5-7 Solving Measurement Problems
Converting in the Metric System
King Gallon Story
5-5 Customary Measure of Weight and Liquid Volume
Unit 6 **NEW VIDEOS!**
**6-1 Understanding Fractions
**6-2 Fractions That Add to One
Interactive Fraction Bars
**6-3 Add and Subtract Fractions with Like Denominators
**6-4 Converting Mixed Numbers and Fractions Greater Than 1 (Improper Fractions)
**6-5 Add & Subtract Mixed Numbers
**6-6 Practice with Fractions and Mixed Numbers
**6-7 Multiply a Fraction and a Whole Number
**6-8 Practice Multiplying a Fraction and a Whole Number
Unit 7
Comparing Fractions on a Number Line (Khan Academy)
7-1 Comparing Non-Unit Fractions
7-2 Fractions on the Number Line
7-3 Fractions of Different Size Wholes
7-4 Finding Equivalent Fractions Using Multiplication
7-5 Finding Equivalent Fractions Using Division
7-6 Part 1 Comparing Fractions with Unlike Denominators
7-6 Part 2
**New! 7-7 Fractions and Line Plots
7-7 Fractions and Line Plots
7-8 Relating Fractions and Decimals
**New! 7-8 & 7-9 Fractions and Decimals
7-10
**New! 7-10 & 7-11 Comparing Decimals and Decimals Greater Than 1
**New! 7-12 Comparing Decimals Greater Than 1
Unit 7 Test
Unit 8
8-1
8-2
8-3
8-4 Part 1
8-4 Part 2
8-6
8-7
**CLICK HERE** for activities for each lesson in Unit 8 Tip: If it says "access denied" when you click on a link, click in the url bar (where you would type a website address) to make it blue, then press enter...the links do work!
Fact Table Strategies by Mrs. Wallaker:
Make Your Own Math Fact Table: Strategy for Test Taking
Make Your Own Math Fact Table: Option 2