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| Chapter 1: Numbers to 10,000 |
| Lesson 1: Numbers to 10,000 |
| Lesson 2: Place Value — Part 1 |
| Lesson 3: Place Value — Part 2 |
| Lesson 4: Comparing Numbers |
| Lesson 5: The Number Line |
| Lesson 6: Practice A |
| Lesson 7: Number Patterns |
| Lesson 8: Rounding to the Nearest Thousand |
| Lesson 9: Rounding to the Nearest Hundred |
| Lesson 10: Rounding to the Nearest Ten |
| Lesson 11: Practice B |
| Chapter 2: Addition and Subtraction — Part 1 |
| Lesson 1: Mental Addition — Part 1 |
| Lesson 2: Mental Addition — Part 2 |
| Lesson 3: Mental Subtraction — Part 1 |
| Lesson 4: Mental Subtraction — Part 2 |
| Lesson 5: Making 100 and 1,000 |
| Lesson 6: Strategies for Numbers Close to Hundreds |
| Lesson 7: Practice A |
| Lesson 8: Sum and Difference |
| Lesson 9: Word Problems — Part 1 |
| Lesson 10: Word Problems — Part 2 |
| Lesson 11: 2-Step Word Problems |
| Lesson 12: Practice B |
| Chapter 3: Addition and Subtraction — Part 2 |
| Lesson 1: Addition with Regrouping |
| Lesson 2: Subtraction with Regrouping — Part 1 |
| Lesson 3: Subtraction with Regrouping — Part 2 |
| Lesson 4: Estimating Sums and Differences — Part 1 |
| Lesson 5: Estimating Sums and Differences — Part 2 |
| Lesson 6: Word Problems |
| Lesson 7: Practice |
| Chapter 4: Multiplication and Division |
| Lesson 1: Looking Back at Multiplication |
| Lesson 2: Strategies for Finding the Product |
| Lesson 3: Looking Back at Division |
| Lesson 4: Multiplying and Dividing with 0 and 1 |
| Lesson 5: Division with Remainders |
| Lesson 6: Odd and Even Numbers |
| Lesson 7: Word Problems — Part 1 |
| Lesson 8: Word Problems — Part 2 |
| Lesson 9: 2-Step Word Problems |
| Lesson 10: Practice |
| Chapter 5: Multiplication |
| Lesson 1: Multiplying Ones, Tens, and Hundreds |
| Lesson 2: Multiplication Without Regrouping |
| Lesson 3: Multiplication with Regrouping Tens |
| Lesson 4: Multiplication with Regrouping Ones |
| Lesson 5: Multiplication with Regrouping Ones and Tens |
| Lesson 6: Practice A |
| Lesson 7: Multiplying a 3-Digit Number with Regrouping Once |
| Lesson 8: Multiplication with Regrouping More Than Once |
| Lesson 9: Practice B |
| Chapter 6: Division |
| Lesson 1: Dividing Tens and Hundreds |
| Lesson 2: Dividing a 2-Digit Number by 2 — Part 1 |
| Lesson 3: Dividing a 2-Digit Number by 2 — Part 2 |
| Lesson 4: Dividing a 2-Digit Number by 3, 4, and 5 |
| Lesson 5: Practice A |
| Lesson 6: Dividing a 3-Digit Number by 2 |
| Lesson 7: Dividing a 3-Digit Number by 3, 4, and 5 |
| Lesson 8: Dividing a 3-Digit Number, Quotient is 2 Digits |
| Lesson 9: Practice B |
| Chapter 7: Graphs and Tables |
| Lesson 1: Picture Graphs and Bar Graphs |
| Lesson 2: Bar Graphs and Tables |
| Lesson 3: Practice |
| Chapter 8: Multiplying and Dividing with 6, 7, 8, and 9 |
| Lesson 1: The Multiplication Table of 6 |
| Lesson 2: The Multiplication Table of 7 |
| Lesson 3: Multiplying by 6 and 7 |
| Lesson 4: Dividing by 6 and 7 |
| Lesson 5: Practice A |
| Lesson 6: The Multiplication Table of 8 |
| Lesson 7: The Multiplication Table of 9 |
| Lesson 8: Multiplying by 8 and 9 |
| Lesson 9: Dividing by 8 and 9 |
| Lesson 10: Practice B |
| Chapter 9: Fractions — Part 1 |
| Lesson 1: Fractions of a Whole |
| Lesson 2: Fractions on a Number Line |
| Lesson 3: Comparing Fractions with Like Denominators |
| Lesson 4: Comparing Fractions with Like Numerators |
| Lesson 5: Practice |
| Chapter 10: Fractions — Part 2 |
| Lesson 1: Equivalent Fractions |
| Lesson 2: Finding Equivalent Fractions |
| Lesson 3: Simplifying Fractions |
| Lesson 4: Comparing Fractions — Part 1 |
| Lesson 5: Comparing Fractions — Part 2 |
| Lesson 6: Practice A |
| Lesson 7: Adding and Subtracting Fractions — Part 1 |
| Lesson 8: Adding and Subtracting Fractions — Part 2 |
| Lesson 9: Practice B |
| Chapter 11: Measurement |
| Lesson 1: Meters and Centimeters |
| Lesson 2: Subtracting from Meters |
| Lesson 3: Kilometers |
| Lesson 4: Subtracting from Kilometers |
| Lesson 5: Liters and Milliliters |
| Lesson 6: Kilograms and Grams |
| Lesson 7: Word Problems |
| Lesson 8: Practice |
| Chapter 12: Geometry |
| Lesson 1: Circles |
| Lesson 2: Angles |
| Lesson 3: Right Angles |
| Lesson 4: Triangles |
| Lesson 5: Properties of Triangles |
| Lesson 6: Properties of Quadrilaterals |
| Lesson 7: Using a Compass |
| Lesson 8: Practice |
| Chapter 13: Area and Perimeter |
| Lesson 1: Area |
| Lesson 2: Units of Area |
| Lesson 3: Area of Rectangles |
| Lesson 4: Area of Composite Figures |
| Lesson 5: Practice A |
| Lesson 6: Perimeter |
| Lesson 7: Perimeter of Rectangles |
| Lesson 8: Area and Perimeter |
| Lesson 9: Practice B |
| Chapter 14: Time |
| Lesson 1: Units of Time |
| Lesson 2: Calculating Time — Part 1 |
| Lesson 3: Practice A |
| Lesson 4: Calculating Time — Part 2 |
| Lesson 5: Calculating Time — Part 3 |
| Lesson 6: Calculating Time — Part 4 |
| Lesson 7: Practice B |
| Chapter 15: Money |
| Lesson 1: Dollars and Cents |
| Lesson 2: Making $10 |
| Lesson 3: Adding Money |
| Lesson 4: Subtracting Money |
| Lesson 5: Word Problems |
| Lesson 6: Practice |