Sunday, October 31, 2010

Today in class, we talked about our graphs we did for home work based on the data from the bacteria lab video we watched in class. We discussed that you don't have to connect the dots in your graph which a few people did, including me. You just keep them plotted, except for the trend line then you connect the first and last dot only.

In class we discussed things to help us write our conclusion about our graphs for homework. Three key terms that should be incorporated are claim,evidence, and reasoning.

We also looked at our petri dish. In my group we have a big mold spot. It slightly grew bigger. I noticed that the fire alarm had a lot of bacteria because no one pulls the fire alarm, so it has a lot of dust on it. We took our perti dishes and we calculated the fraction and percent of bacteria it covered in it's area.

We then took our petri dish and took it to a stereoscope.(another word for microscope.) When I looked I saw the mold spot that was in the center of the dish. I knew it was the mold because it looked fuzzy,it was white and big.

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