| 5.3 | The Excretory System | 8 | April 8, 2011 |
| 3.4 | Final Digestion and Absorbtion | 9 | April 1, 2011 |
| 3.2 | Human Biology and Health | 2 | March 25, 2011 |
| 3.1 | Human Biology & Health | 12 | March 21, 2011 |
| Cells & Heredity - 3.3 - The Cell & Inheritance | 3 | March 7, 2011 |
| Cells & Heredity - 3.2 - Probability & Genetics | 7 | March 7, 2011 |
| Cells & Heredity - 3.1 - Mendel's Work | 8 | February 21, 2011 |
| 1.4 - Seismic Waves | 5 | February 14, 2011 |
| 2.1 - The Nature of Sound | 4 | January 18, 2011 |
| 1.3 - Interaction of Waves | 12 | January 14, 2011 |
| 1.2 - Properties of Waves | 4 | January 14, 2011 |
| 1.1 - What are Waves? | 9 | January 14, 2011 |
| Section 4.1 "Reflection and Mirrors" | 12 | January 3, 2011 |
| Section 3.2 "Waves of the Electromagnetic Spectrum" | 11 | January 3, 2011 |
| Section 3.4 "Wireless Communication" | 2 | December 6, 2010 |
| Section 3.1 "The Nature of Electromagnetic Waves" | 4 | November 29, 2010 |
| Section 5.4 "Resources From the Ocean" | 2 | October 25, 2010 |
| Section 5.3 "The Neritic Zone and Open Ocean" | 6 | October 18, 2010 |
| Section 5.2 "Life at the Ocean's Edge" | 7 | October 5, 2010 |
| Section 5.1 "Exploring the Ocean" | 10 | October 5, 2010 |