This week in science #9

       This week and science we did another dissection. We cut up another animal that was different from last week. Me and my partner cut up a perch which looked different than what I thought it was going to look like. we took pictures of the animal and my other partners cut up a skate. I cut up the perch which was different than other animal we dissected which was a crab fish. Also we learned how to use the knife and scissors properly. We had to cut open our perch and label parts of it so we could make pictures. Lastly we were able to cut up the perch and just look at the parts which we wanted to see.
       I learned that the inside of the perch is much more different than what I thought  it would look like. There  was a liver and it had a very different inner body than I thought it would have. I also learned how to work with others in my group and learn to share the equipment while working. also there was a different kind of work to be done so me and my partner had to do many different things.
       The two different animals which were dissected at our table were the skate and the perch. The differences between these animals were that they had different ways of living and evolving to their environment. The skate was long and big while the perch was small. The perch had scales and the skate felt rubbery and fake. Another similarity was that the animals are both sea water animals. A difference is that the animals both are different sizes, and while the perch has no teeth the skate had a row of sharp teeth. Lastly another difference is that the skate had a long tail while the perch has a small tail which helps them swim around.

This week in science #8

       Me and my partner dissected a craw fish. The craw fish has many different sections. It has many legs and a mouth with many different looking antennas. It has claws and many different looking parts. it must have these features because it needs to adapt to its environment in the ocean.We cut the craw fish from posterior to anterior, which is head to tail. The lungs of the craw fish was proximately in the same place where the heart should be but on the right side. 
       I learned many things from this dissection. I learned that the liver of a craw fish is yellow which I didn't know before because I thought that it was the same color as a human beings. I also learned that in the tail of a craw fish there is meat. I thought that there was just empty shell but I was wrong. Some questions I have are why is the liver yellow? Also where is the heart ? I didn't see one when me and my partner Andy dissected it . There was more legs that I expected the craw fish to have which was weird becuase I thought it couldnt have more than 4 or 6 legs but it had about 10 or 12 legs all together. The claws were almost different sizes and I didn't know that. I thought that the claws were all one side. I think that this lesson about the dissection is similar to the lesson about the rockets because we had to take apart a certain thing and label parts.