Period 8 Tree Diagram-Discussion

Today in class we discussed our homework. By doing it, we got to practice our skills with using the diagram. We learned that tree diagrams can help in many situations such as patient zero. Later on we picked on Will to play teacher. What this means, is that he has to solve question two of the homework. This way we can point out mistakes and Will can learn to do it himself because he didnt do his homework! Obviously, it was difficult, and to explain the answer to us he needed to first explain it to himself which needed before hand planning. So, we decided to pick on Erica because she actually did the question for homework. She still needed help, therefore Kevin decided to generously volounteer. His explanation was close to this:

I concluded that the 1st X is the patient “zero”. I think this because the main and the 1st person can’t be patient “zero” since if the main traded with 1st, then the 1st would also be negative. Now, the main and 1st are eliminated from being the patient zero. Next, the main and the 1st X traded. After they traded, the main traded with the 2nd X. He became negative. Supposedly, the main gave the sickness to the 2nd X because before when 2nd X traded with his 1st person and 2nd, he was clean. Before the main traded with 1st X, he was positive and then turned negative. So, when he traded with 2nd and 3rd X, he passed on the disease.

Moving on, we discussed the article called How a computer game glitch could help to fight off global pandemic. The article is about how a glitch in a game can possibly be the answer to many pandemic related questions in the science world. The "glitch" is basically that the gamers made a creature, the Hakkar, which is a serpent. The serpent has a virus that was supposed to be only for the strongest players, but the glitch spread the virus to everyone. Therefore, the results show that all the players spend emotional investments and time to make sure they don’t catch the virus. the scientists see how quickly the disease is spreading and where, which will help in their own research.

To conclude, today we learned that tree diagrams can be quite useful in many ways. If you get it right, it can answer one of the most vital questions, like who is spreading the disease. We also learned that a simple glitch has answered the similar questions about epidemics.

Here is a link to see Hakkar at work. http://www.youtube.com/watch?v=LO35f0MIWCE&feature=fvst

BY:::::: SK P8