Do Now 5/6/16 What is the objective for today? What type of cell is this? Identify the following parts: A. B. C. D.

Do Now 5/6/16 What is the objective for today? What type of cell is this? Identify the following parts: A. nucleus B. mitochondria C. ribosomes D. Cell membrane

Reminder Your cell quiz is on Tuesday May 10!

Microscope Basics T. Trimpe 2005 http://sciencespot.net/

Ocular lens (Eyepiece) Body Tube Nosepiece Arm Objectives Stage Stage Clips Coarse Adjustment Diaphragm Fine Adjustment Light Always carry a microscope with one hand holding the arm and one hand under the base. Base

Fill in the table on your worksheet. What’s my power? To calculate the power of magnification, multiply the power of the ocular lens by the power of the objective. What are the powers of magnification for each of the objectives we have on our microscopes? Fill in the table on your worksheet.

Comparing Powers of Magnification We can see better details with higher the powers of magnification, but we cannot see as much of the image. Which of these images would be viewed at a higher power of magnification?

Let’s give it a try ... 1 – Turn on the microscope and then rotate the nosepiece to click the red-banded objective into place. 2 – Place a slide on the stage and secure it using the stage clips. Use the coarse adjustment knob (large knob) to get it the image into view and then use the fine adjustment knob (small knob) to make it clearer. 3 – Once you have the image in view, rotate the nosepiece to view it under different powers. Draw what you see on your worksheet! Be careful with the largest objective! Sometimes there is not enough room and you will not be able to use it! 4 – When you are done, turn off the microscope and put up the slides you used.

You do not need to use the stage clips when viewing wet-mount slides! How to make a wet-mount slide … 1 – Get a clean slide and coverslip from your teacher. 2 – Place ONE drop of water in the middle of the slide. Don’t use too much or the water will run off the edge and make a mess! 3 – Place the edge of the cover slip on one side of the water drop. 4 - Slowly lower the cover slip on top of the drop. Cover Slip Lower slowly You do not need to use the stage clips when viewing wet-mount slides! 5 – Place the slide on the stage and view it first with the red-banded objective. Once you see the image, you can rotate the nosepiece to view the slide with the different objectives.

Agenda 1. Work on the Mystery Picture Cards -Due at the end of class. -Top 3 teams to accurately identify the most parts receive a homework pass. 2. Complete crossword puzzle/Study for cell quiz.

Do Now 5/9/16 What is the objective for today? Identify two reasons why a bug is living and a pencil is non-living. What are ways to tell plant and animal cells apart? Bacteria are usually one-celled organisms. Are they prokaryotic or eukaryotic cells?

Agenda Cell Review Worksheet. (Due May 11 at beginning of class.) Microscope Coloring Worksheet. (Due May 11 at end of class.)

Do Now 5/12/16 What is the objective for today? How many objectives are there on the microscope? When magnified, do you see more of the image or less? Identify what you would look for to determine if a cell is a plant cell or an animal cell.

Agenda -How do we make a “wet-mount slide”? -Analyze the Letter E Lab + Conclusion Questions. -Microscope Coloring

Here's what the letter "e" looks like under low and high power Here's what the letter "e" looks like under low and high power. As you can see, the specimen appears to be upside down and backwards.

When you switch to high power the field of view DECREASES.

Do Now 5/13/16 What is the objective for today? When looking through a microscope, the image you see is _______________ and ______________ than the one on the slide. 3. Outline the procedure to create a wet mount slide. 4. How many objectives does the microscope we are using have? 5. What is the magnification of microscopes eyepiece?

Agenda Finish “Letter E” Lab. Complete “Letter E” Lab Conclusion Questions. We will finish on Monday, do not do for homework!

Do Now 5/16/16 1. What is the objective for today? 2. Identify the total magnification for each of the objectives to the right: 3. How does the procedure for using the microscope differ under high power as opposed to low power?

Microscope Use Procedure Carry with hand under base and other hand on arm. Take cover off, unwrap cord, plug in. Raise stage/objectives all the way up. Turn microscope on. Place slide on stage. Use COARSE adjustment knob to focus on specimen using LOW power. Adjust with FINE adjustment knob. Turn to HIGH power. Focus using only FINE adjustment knob.

Microscope Rules -We will not use the microscopes for anything that is not related to the activity! -You must use a glass slide and cover slip and look at THAT specimen. -Do not put anything on the microscope such as hair or pencils -Listen to the instructions and follow them accurately. -If you cannot behave around microscopes, we will not use them in class.

Microscope Use You will be called up individually to work on number 6.

Agenda Complete Conclusion Questions from Letter E Lab. Hand them in at the front. Microscopes Basics Worksheet. (Number 6 completed individually.)