This class was focused mainly on the modeling of weather and air quality throughout the United States and the world. To introduce this and the topic of proportions, Bob2 led the class in the example of baking a cake. To bake a packaged cake, one must use one box of cake mix, 1/3 cup oil, 3 eggs, 1 1/3 cup water, and a little bit of flour. When you combine these ingredients and put them in an oven, a cake is produced. Similarily, the atmosphere consists of many ingredients, including the NO_x family. The NO_x family consists of NO, NO₂, NO₃, etc, and is emitted by automobiles. He also introduced the VOC's or Volatile Organic Compounds, emitted by factories which contain carbon and hydrogen atoms. Through the reactions of these compounds with heat, ozone is formed. He explained that the amount of ozone in the atmosphere determines ozone concentration for the day. If the sun isn't shining, or if the amount of electricity produced by factories is low, then the ozone level for the day is probably green or yellow, affecting only a few people. Antithetical to this, is that if there are few clouds in the sky, and people are driving more, and factories are producing more products, more ozone is produced, causing a red or purple ozone alert. To illustrate this, the students used the online software, Smog City. This software allowed the students to test various variables that may affect the level of ozone in the atmosphere, to determine the level for those conditions.

The second part of the class was based upon investigating the meaning of the word "inversion" in terms of meteorology, or the study of weather. Inversion is the weather condition in which a layer of warm air covers a layer of cold air, trapping it, so that as you raise elevation, rather than the temperature decreasing, it increases. To investigate this further, Bob2 led them in researching various inversion levels across the US on the internet. They were able to try many different cities across the US that test the inversion level, and choose one to graph through an interactive website on the web. In this graph, the students were able to compare the temperature variation with an inversion level to one without it, as well as to each other's graphs from across the US. The day ended with the normal routine of filling out reports, but most students were excited about learning more about the earth's weather, air quality, and atmosphere.