Jonathan began his lesson by drawing a land and sky picture. He labeled it Nitrogen Cycle. Jonathan learned about the molecular formula for Nitrogen (N2), Nitrite (NO4) and Ammonium (NH4.) Jonathan went to a web site so that he could see the molecular structure of these molecules. Jonathan discussed the concept of atom, molecule, and element. He named some elements as being gold, silver, iron, and copper. Jonathan was introduced to the liquid metal Pb (Mercury.) Jonathan looked at a web site showing a mercury thermometer. We discussed how it works by the fever a person is experiencing causing the mercury to expand in the glass tube. Jonathan worked on the idea that bacteria is the most important factor in putting Nitrogen back into the air. He learned that there are decomposers and other bacteria that make the Nitrogen combine with other elements and become Ammonium. He learned that the plants can only use Nitrogen when it is broken down by bacteria. The subject of over use of nitrogen and fertilizers in the soil causing an imbalance in the nitrogen cycle was part of this discussion. The lesson came from a children's website with a quiz. Jonathan took the quiz and received an 80%. This was very abstract material. We did go back to the text and reviewed how the answers were derived.