| Greco 6th: Energy, Magnetism, Electricity | 42 | June 4, 2012 |
| Greco 6th: Machines | 23 | May 9, 2012 |
| Greco 6th: Motion | 28 | May 2, 2012 |
| Greco 6th: Forces | 32 | March 26, 2012 |
| Greco 6th: Chemical Reactions | 18 | March 16, 2012 |
| Greco 6th: Acids and Bases | 24 | March 12, 2012 |
| Greco 6th: Mixtures & Solutions | 24 | February 29, 2012 |
| Greco 6th: The Periodic Table | 39 | February 10, 2012 |
| Greco 6th: Atoms | 21 | February 1, 2012 |
| Greco 6th: States of Matter & Changes | 19 | January 30, 2012 |
| Greco 6th: Density & Buoyancy | 20 | January 2, 2012 |
| Greco 6th: Properties of Matter | 18 | November 29, 2011 |
| Greco 6th: Graphs | 4 | November 15, 2011 |
| Greco 6th: Proportions & Percent Error | 17 | October 22, 2011 |
| Greco 6th: The Scientific Method | 32 | September 28, 2011 |
| Greco 6th: Introduction to Science | 7 | September 19, 2011 |
| Greco 6th: Laboratory Safety | 20 | September 12, 2011 |