Wow. Didn’t realize it has been over a MONTH since I last posted.
We continue our dissection series with the Crayfish. As I have said before, I get our specimens from Carolina. They come in a well sealed bucket and the specimens are awesome.
Below I am handing out the crayfish to the students. Please note two things: The beautiful specimen and the expression on daughter’s face. The specimens are in excellent color and shape. They are something to oooh and awwww over, but my daughter just does not understand that.
After this experiment, I excused the daughter from future dissections. The poor thing could not eat for the rest of the day and looked rather green. I never thought I would excuse any student, especially one of my kids, from dissections.
Obliviously some legs were removed from the crayfish below. Not everyone is disgusted by them. LOL First line of business is to examine the exterior.
Then we have a look at the inside. With some effort the Carapace is removed from the body.
Gills and other pieces parts are exposed and examined.
More examination of the parts. Sketches and labels are done.
And then it looks like the Crayfish just exploded. What can I say? When the students begin they usually don’t stop until there is nothing left. Except for my daughter who did as little as possible. 🙂
I did not use photos in a PowerPoint this time, but I do have some nice photos you can use. I will post them in a few days after I have posted about the Perch and Frog. You may save them and use them for your classroom, if you wish.