Highlights
A Prehistoric Mystery
Highlights for Children
People & Places
History US History, World Cultures, Native American, Science Prehistoric (non-dino), Alligator Mound, trench, men
HL
930
C1
English
9781683292876
An ancient mound built in the shape of an animal lies in an Ohio neighborhood. Let's read about this ancient neighbor.
Word lists coverage
The word and grammar lists are compiled from commercially available resources and English study websites. They are not intended to be authority. Use at your own discretion.| List | Total | Coverage |
|---|---|---|
| Eiken Grade 1 | 3,105 | 0.1% |
| Eiken Grade 2 | 866 | 1.04% |
| Eiken Grade 3 | 900 | 9.11% |
| Eiken Grade 4 | 600 | 12.33% |
| Eiken Grade 5 | 600 | 15.17% |
| Eiken Grade Pre1 | 2,868 | 0.28% |
| Eiken Grade Pre2 | 1,327 | 1.73% |
| Eiken Grade Pre2+ | 1,562 | 2.94% |
| NDL | 875 | 20.57% |
| NGSL 1 to 1,000 | 1,000 | 18% |
| NGSL 1,001 to 2,000 | 1,000 | 4.1% |
| NGSL 2,001 to 3,000 | 801 | 1.62% |
| NGSL Supplemental | 52 | 11.54% |
Grammar lists coverage
The word and grammar lists are compiled from commercially available resources and English study websites. They are not intended to be authority. Use at your own discretion.| List | Total | Unique | Coverage | Unique |
|---|---|---|---|---|
| Eiken Grade Pre1 | 94 | 94 | 0% | 0% |
| Eiken Grade 2 | 123 | 122 | 0% | 0% |
| Eiken Grade Pre2 | 111 | 108 | 0% | 0% |
| Eiken Grade 3 | 48 | 47 | 0% | 0% |
| Eiken Grade 4 | 52 | 49 | 0% | 0% |
| Eiken Grade 5 | 176 | 139 | 0% | 0% |
| A1 | 352 | 316 | 0% | 0% |
| A2 | 949 | 893 | 0% | 0% |
| B1 | 1,126 | 1,106 | 0% | 0% |
| B2 | 775 | 760 | 0% | 0% |
| C1 | 402 | 395 | 0% | 0% |
| C2 | 312 | 308 | 0% | 0% |