| very | 11 | degree |
| for students in an environment | 10 | transitive-object |
| highly | 7 | degree |
| lesson → be → effective | 106 |
| lesson → be → productive | 17 |
| lesson → be → most effective | 8 |
| negative | neutral | positive |
| 0.054 | 0.303 | 0.643 |
| Raw frequency | 131 |
| Normalized frequency | 0.766 |
| Modifier score | 1.000 |
| Perplexity | 243.270 |