Period 4 November 16, 2010

We are working on our cheek cell lab. We had to make a new slide because they had dried out.
Answer the following questions in your notebook once you have found something on your microscope-
-Draw the cells at high and low power
-Why is the blue methylene necessary?
-Why can the dye get inside the cell?
-Is the cell made up of parts? How do you know? Do you know the names of any parts?(If yes, label your diagrams)
After viewing the cheek cell some of the groups were able to go outside and find a piece of grass. They came inside and ripped the grass into a smaller piece. (above: cheek cells)

They put it on a slide, and with a transfer pipette they put one drop of water on the grass. They put the glass cover slip on top and observed it. The groups drew what they saw on high and low power.

-Sara Misiukiewicz

Friday Period 4

Today during class, we started off by having our microscope experts share their knowledge with us. Caroline, Claudia, Chloe, and I shared vocab and how to use the microscope properly. We told them everything from starting on the lowest magnification to what the different parts are and how to use them.

After the people presented, we talked about the order of multi cellular organisms. We looked back into our notes to to try to figure out the correct order again. Below is what we configured.

Multi Cellular Organisms

Organ System

Organs

Tissues

Cells

After reviewing this, Mr. Finley taugh us how to make a wet mount slide for our experiment for the day. Before he made the example, he said we would be studying our cheek cells under the microscope today. He told us that we are always loosing cells in our mouth when we eat of scratch our skin. Mr. Finley also told us that most of the thing that float in the air are dead cells. Next, Mr. Finley made the example He made it in the following order.

-He swabbed his cheek and put it on the slide

He dropped one drop of methionine

-Then he put on the cover slip.

- Finally he put it under the microscope to focus it and observe it.

When he was finished with the slide, it was our turn to make one. Unfortunately, because of time, class ended before we could really get into looking at our cells under the microscope. People also voted to do it again on Monday instead of trying to catch up. What a shame. Lucky for us, one group was able to focus it rally quickly so we could take a look. (see pic. above) This was a great learning experiment for us about how to use dry mount slides.


By, C()L!N F()R83S

Period 4 Blog-

Today in class we finished our tests and discussed the HW and continued learning about microscopes. We also viewed looked at pieces of string under a microscope connected to the SmartBoard.

In reviewing the online microscope lab homework, we discussed several important points. When you looked into the microscope you saw a backwards, upside down "e" with a red ring on it. When you zoom in, you would see less of the of the backwards, upside down "e" with a red ring on it. When you try to move the slide away, the slide moves towards you and when you try move the slide towards you, it moves away from you . When trying to move the slide to the right, it goes to the left, and when trying to move the slide to the left, it goes right. Also, remember when looking at a specimen object through a microscope, always start on the lowest objective power first, then you may increase the power. Also, there are four objectives on our online microscope; 4, 10, 40, and 100.

^^The online microscope we used.^^

After we went over the important microscope things and the homework for the normal microscope users, we viewed three pieces of thread under under a microscope connected to the SmartBoard. We were able to see what you would see through the oculars of a microscope, on the SmartBoard screen.Matt demonstrated how to move the slide and adjust the coarse adjustments on a microscope. We saw that the string that we thought was a single string, was actually composed of twisted string. We proved that you can focus on different layers of a specimen, however you cannot look through.

If you were absent and need to view the online microscope lab again, this URL will there. http://www.udel.edu/biology/ketcham/microscope/scope.html

Tim S.

Period 4

11/11/10

Microscopes

Today in Mr.Finley's Science class (Period 4) we got in deeper detail with MICROSCOPES! When we came in to class today we took out our microscope homework so Mr.Finley could check if we did it. Then Mr.Finley asked us to rate ourselves on a scale from 1-10 (with 1 being bad and 10 being the best) of the confidence you had in your answers for homework. Then we had to also rate ourselves on our skills on microscopes.
After we rated ourselves Mr.Finley said "For those of you who rated yourself 6 or lower you are going to do a virtual lab on microscopes. But for the others you are going to use the real microscopes and present your knowledge to the class on Thursday or Friday."
So, then the beginners did a Microscope simulation on the computer where they went over the different parts of the microscope and learned how to use them. After that, they answered questions on what they learned, but what ever they didn't finish they must do for homework!(DUE THURSDAY!)
For the more advanced group they actually worked with microscopes! The people in that group made a DRY SLIDE by taking a slide and cut a tiny piece of paper out with writing/print on it, from the recycling and put it on the SLIDE. Then they took some LENS PAPER and cleaned off the COVER LENS so that they could see clearer through the cover lens and also, so there were no smudges. After they cleaned the cover lens they put the cover lens on top of the piece of paper with writing. But, they had to be very careful and only grab the sides of the cover lens and of the slide, so they wouldn't get any finger prints or smudges which would ruin the observations. What made this SLIDE and DRY SLIDE was that after they put their piece of paper down, they didn't put any water or liquid to see the thing your observing better and to keep the cover lens on the slide and prevent it from slipping off. They had NO liquid and made it a dry slide! So then, the group made their DRY SLIDES and put them under the microscopes and observed with first the SMALLER MAGNIFICATION LENS and then the BIGGER MAGNIFICATION LENS and see the difference. Also they adjusted the diaphragm light source to get more light, or less light shining from under the slide. That group observed, took notes and drew pictures of what they saw through the microscopes

CL<3

The Universe and Organisms

We started class off by watching a video. The video was about the solar system and what it's made up of - in song. After the video, we had to answer a few questions about the video. What is the main ideas(s) behind the video and how can this concept explain the structure of multicellular organisms? The main idea of the video live is that we live in a giant universe and our "huge" universe may be only part of space that is never-ending. Our concept of multicellular organisms is that everything comes from something smaller, just like us. For example, we are made up of cells, which are made up of atoms, and so on. As a class, we came up with a ton of complex diagrams as to how everything is broken down from the human body to cells. But what comes in between them? I think that's the real question. We broke down the human body starting with organisms and talked about your bodily systems, including organs, tissues, and ending with cells.

Lab Reports

Today during class, we disscussed our lab repots. We watched a how-to video on creating tables on Microsoft Word. Mr.Finley told us that the lab reports are due on Thursday by 11:59 pm, so don't forget to e-mail your lab reports to him. After that, we played a game in class.

-C.C.

Blog

Today in class we went over the pop quiz that we took with the sub a long time ago. Then we started to talk about what a stereoscope was. A stereoscope is a devise that magnifies and looks at Macroscopic objects. Macro means large objects or things you can already see with your eye. People use stereoscope also to look at bacteria colonies or mold/fungal colonies. Each circle would count as a colony in a Stereoscope. After we talked about a Stereoscope we are going to watch a movie. He wants use to describe what we see and how does bacteria reproduce.

What do i see- I see bacteria growing and growing. It is splitting in 1/2 again and again, before it splits up it gets bigger, they are reproducing/ making more. Also the more bacteria the faster they multiply. In 1 second the bacteria increased by 2.

How does bacteria reproduce- Bacteria reproduces by doubling and making more.

Binary Fission- Binary means two and Fission means to split.
OK so after that we started to talk about bacteria shapes[3] and arrangements[3]. That was what we are going to start in class tomorrow. So in conclusion we are going to be starting a weird project tomorrow.