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| Lesson 1-1: Addition Fact Strategies |
| Lesson 1-2: Doubles and Near Doubles |
| Lesson 1-3: Make a 10 to Add |
| Lesson 1-4: Addition Fact Patterns |
| Lesson 1-5: Count On and Count Back to Subtract |
| Lesson 1-6: Think Addition to Subtract |
| Lesson 1-7: Make a 10 to Subtract |
| Lesson 1-8: Practice Addition and Subtraction Facts |
| Lesson 1-9: Solve Addition and Subtraction Word Problems |
| Lesson 1-10: Construct Arguments |
| Lesson 2-1: Even and Odd Numbers |
| Lesson 2-2: Continue Even and Odd Numbers |
| Lesson 2-3: Use Arrays to Find Totals |
| Lesson 2-4: Make Arrays to Find Totals |
| Lesson 2-5: Model with Math |
| Lesson 3-1: Add Tens and Ones on a Hundreds Chart |
| Lesson 3-2: Add Tens and Ones on an Open Number Line |
| Lesson 3-3: Break Apart Numbers to Add |
| Lesson 3-4: Add Using Compensation |
| Lesson 3-5: Practice Adding Using Strategies |
| Lesson 3-6: Solve One-Step and Two-Step Problems |
| Lesson 3-7: Construct Arguments |
| Lesson 4-1: Add 2-Digit Numbers Using Models |
| Lesson 4-2: Continue to Add 2-Digit Numbers Using Models |
| Lesson 4-3: Add With Partial Sums |
| Lesson 4-4: Add Using Mental Math and Partial Sums |
| Lesson 4-5: Break Apart Numbers and Add Using Mental Math |
| Lesson 4-6: Add More Than Two 2-Digit Numbers |
| Lesson 4-7: Practice Adding Using Strategies |
| Lesson 4-8: Solve One-Step and Two-Step Problems |
| Lesson 4-9: Model With Math |
| Lesson 5-1: Subtract Tens and Ones on a Hundred Chart |
| Lesson 5-2: Count Back to Subtract Using an Open Number Line |
| Lesson 5-3: Add Up to Subtract Using an Open Number Line |
| Lesson 5-4: Break Apart Numbers to Subtract |
| Lesson 5-5: Subtract Using Compensation |
| Lesson 5-6: Practice Subtracting Using Strategies |
| Lesson 5-7: Solve One-Step and Two-Step Problems |
| Lesson 5-8: Critique Reasoning |
| Lesson 6-1: Subtract 1-Digit Numbers Using Models |
| Lesson 6-2: Subtract 2-Digit Numbers Using Models |
| Lesson 6-3: Subtract Using Partial Differences |
| Lesson 6-4: Continue to Subtract Using Partial Differences |
| Lesson 6-5: Practice Subtracting |
| Lesson 6-6: Solve One-Step and Two-Step Problems |
| Lesson 6-7: Reasoning |
| Lesson 7-1: Represent Addition and Subtraction Problems |
| Lesson 7-2: Mixed Practice: Solve Addition and Subtraction Problems |
| Lesson 7-3: Continue Practice with Addition and Subtraction Problems |
| Lesson 7-4: Solve Two-Step Problems |
| Lesson 7-5: Continue to Solve Two-Step Problems |
| Lesson 7-6: Make True Equations |
| Lesson 7-7: Continue to Make True Equations |
| Lesson 7-8: Reasoning |
| Lesson 8-1: Solve Problems with Coins |
| Lesson 8-2: Continue to Solve Problems with Coins |
| Lesson 8-3: Solve Problems with Dollar Bills |
| Lesson 8-4: Continue to Solve Problems with Dollar Bills |
| Lesson 8-5: Reasoning |
| Lesson 8-6: Tell and Write Time to Five Minutes |
| Lesson 8-7: Tell Time Before and After the Hour |
| Lesson 8-8: A.M. and P.M. |
| Lesson 9-1: Understand Hundreds |
| Lesson 9-2: Models and 3-Digit Numbers |
| Lesson 9-3: Name Place Values |
| Lesson 9-4: Read and Write 3-Digit Numbers |
| Lesson 9-5: Different Ways to Name the Same Number |
| Lesson 9-6: Place-Value Patterns with Numbers |
| Lesson 9-7: Skip Count by 5s, 10s, and 100s to 1,000 |
| Lesson 9-8: Compare Numbers Using Place Value |
| Lesson 9-9: Compare Numbers on the Number Line |
| Lesson 9-10: Look For and Use Structure |
| Lesson 10-1: Add 10 and 100 |
| Lesson 10-2: Add on an Open Number Line |
| Lesson 10-3: Add Using Models |
| Lesson 10-4: Continue to Add Using Place Value and Models |
| Lesson 10-5: Add Using Place Value and Partial Sums |
| Lesson 10-6: Explain Addition Strategies |
| Lesson 10-7: Repeated Reasoning |
| Lesson 11-1: Subtract 10 and 100 |
| Lesson 11-2: Subtract on an Open Number Line |
| Lesson 11-3: Subtract Using Models |
| Lesson 11-4: Subtract Using Models and Place Value |
| Lesson 11-5: Explain Subtraction Strategies |
| Lesson 11-6: Persevere |
| Lesson 12-1: Estimating Length |
| Lesson 12-2: Measure with Inches |
| Lesson 12-3: Inches, Feet, and Yards |
| Lesson 12-4: Measure Length Using Different Customary Units |
| Lesson 12-5: Measure with Centimeters |
| Lesson 12-6: Centimeters and Meters |
| Lesson 12-7: Measure Length Using Different Metric Units |
| Lesson 12-8: Compare Lengths |
| Lesson 12-9: Precision |
| Lesson 13-1: 2-Dimensional Shapes |
| Lesson 13-2: Polygons and Angles |
| Lesson 13-3: Draw 2-Dimensional Shapes |
| Lesson 13-4: Cubes |
| Lesson 13-5: Equal Shares |
| Lesson 13-6: Partition Shapes |
| Lesson 13-7: Equal Shares, Different Shapes |
| Lesson 13-8: Repeated Reasoning |
| Lesson 14-1: Add and Subtract with Measurements |
| Lesson 14-2: Find Unknown Measurements |
| Lesson 14-3: Continue to Find Unknown Measurements |
| Lesson 14-4: Add and Subtract on a Number Line |
| Lesson 14-5: Use Appropriate Tools |
| Lesson 15-1: Line Plots |
| Lesson 15-2: More Line Plots |
| Lesson 15-3: Bar Graphs |
| Lesson 15-4: Picture Graphs |
| Lesson 15-5: Draw Conclusions from Graphs |
| Lesson 15-6: Reasoning |
| Lesson 16-1: Relate Multiplication and Addition |
| Lesson 16-10: Fractions and Regions |
| Lesson 16-2: Arrays and Properties |
| Lesson 16-3: Division: How Many in Each Group? |
| Lesson 16-4: Division: How Many Equal Groups? |
| Lesson 16-5: Use Partial Sums to Add |
| Lesson 16-6: Use Regrouping to Add |
| Lesson 16-7: Use Partial Differences to Subtract |
| Lesson 16-8: Use Regrouping to Subtract |
| Lesson 16-9: Partition Regions into Equal Parts |