| yellow | Unit 8 | Lesson 85 |
| yellow | Unit 8 | Lesson 86 |
| yellow | Unit 8 | Lesson 87 |
| yellow | Unit 12 | Lesson 104 |
| green | Unit 6 | Lesson 180 |
| orange | Unit 4 | Lesson 223 |
| orange | Unit 4 | Lesson 224 |
| orange | Unit 4 | Lesson 225 |
| bronze | Unit 7 | Lesson 345 |
| bronze | Unit 7 | Lesson 346 |
| bronze | Unit 7 | Lesson 347 |
| bronze | Unit 7 | Lesson 348 |
| bronze | Unit 10 | Lesson 359 |
| bronze | Unit 10 | Lesson 361 |
| bronze | Unit 11 | Lesson 364 |