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| Chapter 1: Numbers to 10 |
| Lesson 1.1: Counting to 10 |
| Lesson 1.2: Comparing Numbers |
| Lesson 1.3: Number Patterns |
| Chapter 2: Addition and Subtraction Within 10 |
| Lesson 2.1: Making Number Bonds |
| Lesson 2.2: Ways to Add |
| Lesson 2.3: Making Addition Stories |
| Lesson 2.4: Real-World Problems: Addition |
| Lesson 2.5: Ways to Subtract |
| Lesson 2.6: Making Subtraction Stories |
| Lesson 2.7: Real-World Problems: Subtraction |
| Lesson 2.8: Making Fact Families |
| Chapter 3: Shapes and Patterns |
| Lesson 3.1: Exploring Flat Shapes |
| Lesson 3.2: Exploring Solid Shapes |
| Lesson 3.3: Using Shapes to Make Pictures and Models |
| Lesson 3.4: Seeing Shapes Around Us |
| Lesson 3.5: Using Flat Shapes to Make Patterns |
| Lesson 3.6: Using Solid Shapes to Make Patterns |
| Chapter 4: Numbers to 20 |
| Lesson 4.1: Counting to 20 |
| Lesson 4.2: Place Value |
| Lesson 4.3: Comparing and Ordering Numbers |
| Lesson 4.4: Number Patterns |
| Chapter 5: Addition and Subtraction Within 20 |
| Lesson 5.1: Ways to Add Fluently |
| Lesson 5.2: Ways to Subtract Fluently |
| Lesson 5.3: Real-World Problems: Addition and Subtraction |
| Chapter 6: Numbers to 40 |
| Lesson 6.1: Counting to 40 |
| Lesson 6.2: Place Value |
| Lesson 6.3: Comparing, Ordering, and Number Patterns |
| Chapter 7: Calendar and Time |
| Lesson 7.1: Using a Calendar |
| Lesson 7.2: Telling Time to the Hour |
| Lesson 7.3: Telling Time to the Half Hour |
| Chapter 8: Addition and Subtraction Within 40 |
| Lesson 8.1: Addition Without Regrouping |
| Lesson 8.2: Addition with Regrouping |
| Lesson 8.3: Subtraction Without Regrouping |
| Lesson 8.4: Subtraction with Regrouping |
| Lesson 8.5: Real-World Problems: Addition and Subtraction |
| Lesson 8.6: Getting Ready for Multiplication |
| Chapter 9: Length and Weight |
| Lesson 9.1: Comparing Lengths |
| Lesson 9.2: Comparing More Lengths |
| Lesson 9.3: Using a Start Line |
| Lesson 9.4: Measuring Length |
| Lesson 9.5: Measuring Length in Units |
| Lesson 9.6: Comparing Weights |
| Lesson 9.7: Measuring Weight |
| Lesson 9.8: Measuring Weight in Units |
| Chapter 10: Numbers to 120 |
| Lesson 10.1: Counting to 120 |
| Lesson 10.2: Place Value |
| Lesson 10.3: Comparing, Ordering, and Number Patterns |
| Chapter 11: Addition and Subtraction Within 100 |
| Lesson 11.1: Addition Without Regrouping |
| Lesson 11.2: Addition with Regrouping |
| Lesson 11.3: Subtraction Without Regrouping |
| Lesson 11.4: Subtraction with Regrouping |
| Chapter 12: Graphs |
| Lesson 12.1: Simple Picture Graphs |
| Lesson 12.2: Tally Charts and Picture Graphs |
| Chapter 13: Money |
| Lesson 13.1: Penny, Nickel, and Dime |
| Lesson 13.2: Quarter |
| Lesson 13.3: Counting Money |
| Lesson 13.4: Adding and Subtracting Money |