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| Chapter 1: Addition Concepts |
| Lesson 1: Addition Stories |
| Lesson 2: Model Addition |
| Lesson 3: Addition Number Sentences |
| Lesson 4: Add Zero |
| Lesson 5: Vertical Addition |
| Lesson 6: Problem Solving |
| Lesson 7: Ways to Make 4 and 5 |
| Lesson 8: Ways to Make 6 and 7 |
| Lesson 9: Ways to Make 8 |
| Lesson 10: Ways to Make 9 |
| Lesson 11: Ways to Make 10 |
| Lesson 12: Find Missing Parts of 10 |
| Lesson 13: True and False Statements |
| Chapter 2: Subtraction Concepts |
| Lesson 1: Subtraction Stories |
| Lesson 2: Model Subtraction |
| Lesson 3: Subtraction Number Sentences |
| Lesson 4: Subtract 0 and All |
| Lesson 5: Vertical Subtraction |
| Lesson 6: Problem Solving |
| Lesson 7: Compare Groups |
| Lesson 8: Subtract From 4 and 5 |
| Lesson 9: Subtract From 6 and 7 |
| Lesson 10: Subtract From 8 |
| Lesson 11: Subtract From 9 |
| Lesson 12: Subtract From 10 |
| Lesson 13: Relate Addition and Subtraction |
| Lesson 14: True and False Statements |
| Chapter 3: Addition Strategies to 20 |
| Lesson 1: Count on 1, 2, or 3 |
| Lesson 2: Count on Using Pennies |
| Lesson 3: Use a Number Line to Add |
| Lesson 4: Use Doubles to Add |
| Lesson 5: Use Near Doubles to Add |
| Lesson 6: Problem Solving |
| Lesson 7: Make 10 to Add |
| Lesson 8: Add in Any Order |
| Lesson 9: Add Three Numbers |
| Chapter 4: Subtraction Strategies to 20 |
| Lesson 1: Count Back 1, 2, or 3 |
| Lesson 2: Use a Number Line to Subtract |
| Lesson 3: Use Doubles to Subtract |
| Lesson 4: Problem Solving |
| Lesson 5: Make 10 to Subtract |
| Lesson 6: Use Related Facts to Add and Subtract |
| Lesson 7: Fact Families |
| Lesson 8: Missing Addends |
| Chapter 5: Place Value |
| Lesson 1: Numbers 11 to 19 |
| Lesson 2: Tens |
| Lesson 3: Count by Tens Using Dimes |
| Lesson 4: Ten and Some More |
| Lesson 5: Tens and Ones |
| Lesson 6: Problem Solving |
| Lesson 7: Numbers to 100 |
| Lesson 8: Ten More, Ten Less |
| Lesson 9: Count by Fives Using Nickels |
| Lesson 10: Use Models to Compare Numbers |
| Lesson 11: Use Symbols to Compare Numbers |
| Lesson 12: Numbers to 120 |
| Lesson 13: Count to 120 |
| Lesson 14: Read and Write Numbers to 120 |
| Chapter 6: Two-Digit Addition and Subtraction |
| Lesson 1: Add Tens |
| Lesson 2: Count on Tens and Ones |
| Lesson 3: Add Tens and Ones |
| Lesson 4: Problem Solving |
| Lesson 5: Add Tens and Ones With Regrouping |
| Lesson 6: Subtract Tens |
| Lesson 7: Count Back By 10’s |
| Lesson 8: Relate Addition and Subtraction of Tens |
| Chapter 7: Organize and Use Graphs |
| Lesson 1: Tally Charts |
| Lesson 2: Problem Solving |
| Lesson 3: Make Picture Graphs |
| Lesson 4: Read Picture Graphs |
| Lesson 5: Make Bar Graphs |
| Lesson 6: Read Bar Graphs |
| Chapter 8: Measurement and Time |
| Lesson 1: Compare Lengths |
| Lesson 2: Compare and Order Lengths |
| Lesson 3: Nonstandard Units of Lengths |
| Lesson 4: Problem Solving |
| Lesson 5: Time to the Hour: Analog |
| Lesson 6: Time to the Hour: Digital |
| Lesson 7: Time to the Half Hour: Analog |
| Lesson 8: Time to the Half Hour: Digital |
| Lesson 9: Time to the Hour and Half Hour |
| Chapter 9: Two-Dimensional Shapes and Equal Shares |
| Lesson 1: Squares and Rectangles |
| Lesson 2: Triangles and Trapezoids |
| Lesson 3: Circles |
| Lesson 4: Compare Shapes |
| Lesson 5: Composite Shapes |
| Lesson 6: More Composite Shapes |
| Lesson 7: Problem Solving |
| Lesson 8: Equal Parts |
| Lesson 9: Halves |
| Lesson 10: Quarters and Fourths |
| Chapter 10: Three-Dimensional Shapes |
| Lesson 1: Cubes and prisms |
| Lesson 2: Cones and Cylinders |
| Lesson 3: Problem Solving |
| Lesson 4: Combine-Three Dimensional Shapes |