Bob2 started class by informing the students that there had been a change in the schedule and explained exactly what it would be. Bob2 taught the students to use STELLA modeling software. With STELLA the students modeled the rate at which water will cool from a boiling point in different types of containers. The students first made hypotheses of which container would stay warm the longest. They modeled each container to see which one would remain heated the longest.
After break the students restarted a model that they started yeterday. The model they worked on is called the lynx and hare model. It models the death rate of hares and compares it to the birth rate as well as the death rate of lynx. After the results were in the students began another model. This time Kirstin taught them. Together they modeled the effect of flooding on the growth of algae. After they completed that model they modeled the effect of algae on a fish population.
After lunch Bob2 taught them a more complex model that he had mentioned earlier. The model dealt with the effect of phosphorus (in clothes detergent) that goes into Falls lake and essentially gets back to you after the fish eat the phosphorus and you eat the fish. This is a complex model that the students must complete. To make his challenge even harder Bob2 told the students to keep the model organized and they could make it one page. Once all of the results from that model were in and compared, the class moved on to the next project. Bob2 began to disdcuss the presentations that the students would be making on Friday afternoon. The students were assigned projects based on what they were most interested in.