| Leonard, Alexandria - |
| The History of Inflatable Furniture (15) | | Multiple Choice | 2011.07.02 |
| The history of submarines (9) | | Multiple Choice | 2011.04.07 |
| The history of the Amazon rainforest (17) | | Multiple Choice | 2011.03.21 |
| The History of the Haunted Mansion Ride at Disney Parks (18) | | Multiple Choice | 2011.12.05 |
| The History of the Internet (40) | | Multiple Choice | 2011.04.26 |
| The history of the sombrero vueltiao (8) | | Multiple Choice | 2011.08.16 |
| The History of Transportation (32) | | Multiple Choice | 2011.04.08 |
| The History of Weather Forecasting Techniques (9) | | Multiple Choice | 2011.03.20 |
| The impact of oil production on Colombia's environment (8) | | Multiple Choice | 2011.05.08 |
| The Largest Meteorite Craters on Earth (29) | | Multiple Choice | 2011.07.26 |
| The Legend of the Fountain of Youth in Literature (9) | | Multiple Choice | 2011.09.11 |
| The life cycle of a coffee bean (17) | | Multiple Choice | 2011.08.12 |
| The Longest Running Television Shows of All Time (19) | | Multiple Choice | 2011.04.14 |
| The Mathematics of Snowflake Formation (19) | | Multiple Choice | 2011.02.03 |
| The Myth of Atlantis: Fact or Fiction? (17) | | Multiple Choice | 2011.06.19 |
| The Origin of the Fork as a Dining Tool (8) | | Multiple Choice | 2011.08.20 |
| The Origin of the Potato Chip (26) | | Multiple Choice | 2011.11.19 |
| The Origins of the High Five Gesture (8) | | Multiple Choice | 2011.10.04 |
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