| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| how long has homework existed | 1.09 | 0.6 | 1558 | 1 |
| the history of homework | 1.88 | 0.7 | 9024 | 68 |
| when was homework made | 0.08 | 0.7 | 2943 | 4 |
| when was homework created | 1.53 | 0.2 | 6270 | 72 |
| history of homework in america | 1.69 | 0.7 | 2218 | 61 |
| when did homework begin | 0.64 | 0.7 | 4920 | 8 |
| when did homework start | 0.36 | 0.5 | 6012 | 61 |
| when was homework invented in the usa | 1.67 | 0.3 | 1974 | 48 |
| where did homework originate | 1.14 | 0.7 | 4634 | 78 |
| where was homework invented | 0.63 | 0.1 | 1168 | 22 |
| what year was homework invented | 0.88 | 0.3 | 5352 | 100 |
| when was invented homework | 0.44 | 0.7 | 1051 | 56 |
| when was homework introduced | 0.88 | 0.1 | 8315 | 41 |
| who created homework and when | 1 | 0.4 | 5006 | 13 |
| who invented homework facts | 1.41 | 0.4 | 8104 | 86 |
| where did homework come from | 1.39 | 0.1 | 2164 | 19 |
| what country invented homework | 1.83 | 0.1 | 1703 | 3 |
