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| Lesson 1.1: Addition: Add To |
| Lesson 1.2: Solve Add To Problems |
| Lesson 1.3: Solve Put Together Problems |
| Lesson 1.4: Solve Put Together Problems with Both Addends Unknown |
| Lesson 1.5: Solve Take From Problems |
| Lesson 1.6: Solve Compare Problems: More |
| Lesson 1.7: Solve Compare Problems: Fewer |
| Lesson 1.8: Solve Add To Problems with Change Unknown |
| Lesson 1.9: Connect Put Together and Take Apart Problems |
| Lesson 10.1: Order Objects by Length |
| Lesson 10.2: Compare Lengths Indirectly |
| Lesson 10.3: Measure Lengths |
| Lesson 10.4: Measure More Lengths |
| Lesson 10.5: Solve Compare Problems Involving Length |
| Lesson 11.1: Sort and Organize Data |
| Lesson 11.2: Read and Interpret Picture Graphs |
| Lesson 11.3: Read and Interpret Bar Graphs |
| Lesson 11.4: Represent Data |
| Lesson 11.5: Solve Problems Involving Data |
| Lesson 12.1: Tell Time to the Hour |
| Lesson 12.2: Tell Time to the Half Hour |
| Lesson 12.3: Tell Time to the Hour and Half Hour |
| Lesson 12.4: Tell Time Using Analog and Digital Clocks |
| Lesson 13.1: Sort Two-Dimensional Shapes |
| Lesson 13.2: Describe Two-Dimensional Shapes |
| Lesson 13.3: Combine Two-Dimensional Shapes |
| Lesson 13.4: Create More Shapes |
| Lesson 13.5: Take Apart Two-Dimensional Shapes |
| Lesson 13.6: Sort Three-Dimensional Shapes |
| Lesson 13.7: Describe Three-Dimensional Shapes |
| Lesson 13.8: Combine Three-Dimensional Shapes |
| Lesson 13.9: Take Apart Three-Dimensional Shapes |
| Lesson 14.1: Equal Shares |
| Lesson 14.2: Partition Shapes into Halves |
| Lesson 14.3: Partition Shapes into Fourths |