| Title | Terms | Created |
| Chapter 16 Volcanoes | 17 | February 9, 2009 |
| Chapter 15 Earthquakes | 19 | February 9, 2009 |
| Chapter 14 Plate Tectonics | 30 | November 9, 2008 |
| Chapter 13 Cognates | 10 | November 9, 2008 |
| Chapter 11 Cognates | 11 | November 9, 2008 |
| Chapter 10 Cognates | 11 | November 9, 2008 |
| Chapter 9 Cognates | 10 | November 9, 2008 |
| Chapter 8 Cognates | 10 | November 9, 2008 |
| Chapter 7 Cognates | 11 | November 9, 2008 |
| Chapter 6 Cognates | 11 | November 9, 2008 |
| Chapter 12 Cognates | 10 | November 6, 2008 |
| Chapter 5 Cognates | 10 | November 6, 2008 |
| Chapter 4 Cognates | 10 | November 6, 2008 |
| Chapter 3 Cognates | 10 | November 6, 2008 |
| Chapter 2 Cognates | 11 | November 6, 2008 |
| Chapter 1 Cognates | 12 | November 6, 2008 |
| Chapter 3 Plant Processes | 7 | October 31, 2008 |
| Chapter 2 The Cell in Action | 14 | October 31, 2008 |
| Chapter 1 Science in Our World | 14 | October 31, 2008 |
| Chapter 13 Earths Systems and Cycles | 18 | October 31, 2008 |
| Chapter 12 The Earth's Ecosystems | 12 | October 31, 2008 |
| Chapter 5 Genes and DNA | 8 | October 20, 2008 |
| Chapter 6 The Evolution of Living Things | 11 | October 20, 2008 |
| Plate Tectonics | 36 | December 5, 2007 |
| Changes Over Time | 12 | December 5, 2007 |
| Modern Genetics | 12 | December 5, 2007 |
| Genetics:The Science of Heredity | 17 | November 2, 2007 |
| Cell Processes and Energy | 20 | November 1, 2007 |
| Cell Structure and Function | 23 | November 1, 2007 |
| Energy Resources | 15 | October 22, 2007 |
| Air and Water Resources | 13 | October 22, 2007 |
| Land and Soil Resources | 14 | October 22, 2007 |
| Living Resources | 12 | October 22, 2007 |
| Ecosystems and Biomes | 42 | October 22, 2007 |
| Populations and Communities | 27 | October 18, 2007 |