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| Unit 1: Math Is… |
| Lesson 1-1: Math Is Mine |
| Lesson 1-2: Math Is Exploring and Thinking |
| Lesson 1-3: Math Is In My World |
| Lesson 1-4: Math Is Explaining and Sharing |
| Lesson 1-5: Math Is Finding Patterns |
| Lesson 1-6: Math Is Ours |
| Unit 2: Number Patterns |
| Lesson 2-1: Counting Patterns to 100 |
| Lesson 2-2: Patterns on a Number Chart to 120 |
| Lesson 2-3: Patterns on a Number Line |
| Lesson 2-4: Patterns When Reading and Writing Numbers |
| Lesson 2-5: Patterns When Representing Objects In a Group |
| Unit 3: Place Value |
| Lesson 3-1: Numbers 11 to 19 |
| Lesson 3-2: Understand Tens |
| Lesson 3-3: Represent Tens and Ones |
| Lesson 3-4: Represent 2-Digit Numbers |
| Lesson 3-5: Represent 2-Digit Numbers in Different Ways |
| Lesson 3-6: Compare Numbers |
| Lesson 3-7: Compare Numbers on a Number Line |
| Lesson 3-8: Use Symbols to Compare Numbers |
| Unit 4: Addition within 20: Facts and Strategies |
| Lesson 4-1: Relate Counting to Addition |
| Lesson 4-2: Count On to Add |
| Lesson 4-3: Doubles |
| Lesson 4-4: Near Doubles |
| Lesson 4-5: Make a 10 to Add |
| Lesson 4-6: Choose Strategies to Add |
| Lesson 4-7: Use Properties to Add |
| Lesson 4-8: Add Three Numbers |
| Lesson 4-9: Find an Unknown Number in an Addition Equation |
| Lesson 4-10: Understand the Equal Sign |
| Lesson 4-11: True Addition Equations |
| Unit 5: Subtraction within 20: Facts and Strategies |
| Lesson 5-1: Relate Counting to Subtraction |
| Lesson 5-2: Count Back to Subtract |
| Lesson 5-3: Count On to Subtract |
| Lesson 5-4: Make a 10 to Subtract |
| Lesson 5-5: Use Near Doubles to Subtract |
| Lesson 5-6: Use Addition to Subtract |
| Lesson 5-7: Use Fact Families to Subtract |
| Lesson 5-8: Find an Unknown Number in a Subtraction Equation |
| Lesson 5-9: True Subtraction Equations |
| Unit 6: Shapes and Solids |
| Lesson 6-1: Understand Defining Attributes of Shapes |
| Lesson 6-2: Understand Non-Defining Attributes of Shapes |
| Lesson 6-3: Compose Shapes |
| Lesson 6-4: Build New Shapes |
| Lesson 6-5: Understand Attributes of Solids |
| Lesson 6-6: Build New Solids |
| Unit 7: Meanings of Addition |
| Lesson 7-1: Represent and Solve Add To Problems |
| Lesson 7-2: Represent and Solve More Add To Problems |
| Lesson 7-3: Represent and Solve Put Together Problems |
| Lesson 7-4: Represent and Solve More Put Together Problems |
| Lesson 7-5: Represent and Solve Addition Problems with Three Addends |
| Lesson 7-6: Solve Addition Problems |
| Unit 8: Meanings of Subtraction |
| Lesson 8-1: Represent and Solve Take From Problems |
| Lesson 8-2: Represent and Solve More Take From Problems |
| Lesson 8-3: Represent and Solve Take Apart Problems |
| Lesson 8-4: Represent and Solve More Take Apart Problems |
| Lesson 8-5: Solve Problems Involving Subtraction |
| Lesson 8-6: Solve More Problems Involving Subtraction |
| Lesson 8-7: Solve Problems Involving Addition and Subtraction |
| Unit 9: Addition within 100 |
| Lesson 9-1: Use Mental Math to Find 10 More |
| Lesson 9-2: Represent Adding Tens |
| Lesson 9-3: Represent Adding Tens and Ones |
| Lesson 9-4: Decompose Addends to Add |
| Lesson 9-5: Use an Open Number Line to Add within 100 |
| Lesson 9-6: Decompose to Add on an Open Number Line |
| Lesson 9-7: Regroup to Add |
| Lesson 9-8: Add 2-Digit Numbers |
| Unit 10: Compare Using Addition and Subtraction |
| Lesson 10-1: Represent and Solve Compare Problems |
| Lesson 10-2: Represent and Solve Compare Problems Using Addition |
| Lesson 10-3: Represent and Solve More Compare Problems |
| Lesson 10-4: Solve Compare Problems Using Addition and Subtraction |
| Unit 11: Subtraction within 100 |
| Lesson 11-1: Use Mental Math to Find 10 Less |
| Lesson 11-2: Represent Subtracting Tens |
| Lesson 11-3: Subtract Tens |
| Lesson 11-4: Use Addition to Subtract Tens |
| Lesson 11-5: Explain Subtraction Strategies |
| Unit 12: Measurement and Data |
| Lesson 12-1: Compare and Order Lengths |
| Lesson 12-2: More Ways to Compare Lengths |
| Lesson 12-3: Strategies to Measure Lengths |
| Lesson 12-4: More Strategies to Measure Lengths |
| Lesson 12-5: Tell Time to the Hour |
| Lesson 12-6: Tell Time to the Half Hour |
| Lesson 12-7: Organize Data |
| Lesson 12-8: Represent Data |
| Lesson 12-9: Interpret Data |
| Lesson 12-10: Solve Problems Involving Data |
| Unit 13: Equal Shares |
| Lesson 13-1: Understand Equal Shares |
| Lesson 13-2: Partition Shapes into Halves |
| Lesson 13-3: Partition Shapes into Fourths |
| Lesson 13-4: Describe the Whole |
| Lesson 13-5: Describe Halves and Fourths of Shapes |