| red | Unit 1 | Lesson 3 |
| yellow | Unit 2 | Lesson 57 |
| yellow | Unit 2 | Lesson 58 |
| yellow | Unit 2 | Lesson 59 |
| yellow | Unit 2 | Lesson 60 |
| yellow | Unit 9 | Lesson 92 |
| yellow | Unit 10 | Lesson 96 |
| blue | Unit 1 | Lesson 107 |
| green | Unit 1 | Lesson 159 |
| green | Unit 1 | Lesson 160 |
| green | Unit 6 | Lesson 183 |
| green | Unit 11 | Lesson 205 |
| orange | Unit 11 | Lesson 253 |
| orange | Unit 11 | Lesson 254 |
| orange | Unit 11 | Lesson 255 |
| orange | Unit 11 | Lesson 256 |
| red | Unit 6 | Lesson 26 |