Microscope Rules:

 

  1. How to use the microscope      
    1. Pick up the microscope from the cabinet using two hands. One hand on the neck and one hand supporting the base.
    2. Place the microscope on the lab bench with the adjustments nearest you with a forearm distance from the edge of the lab bench.
    3. Plug in the cord. And turn on the power.
    4. Be sure the lowest power objective is clicked in place.
    5. The stage is all the way up and turned a quarter down.
    6. Place your specimen on the stage and focus on low power
    7. If appropriate move the medium objective into place while watching the slide. Be sure you have enough room or you will scrape, break the slide and lose your specimen.
    8. Focus with coarse adjustment and then without moving the stage use the fine focus knob.
    9. Repeat for high power if appropriate.
    10. Draw your specimen and measure.
    11. Return low objective into place, and return the specimen to the tray..
    12. Turn the power off, unplug and wrap the chord.
    13. Replace dust cover and carry to the cabinet using two hands. One on the neck and one supporting the base.
  2. How to measure the size of images under the microscope
    1. See measuring microscope activity
  3. How to draw images
    1. When your specimen is focused clearly, you are ready to draw.
    2. Outline a quarter or small Petri dish very neatly in pencil.
    3. To the left of the circle label the total magnification: Eyepiece (10X) x Objective( 4X, 10X, 40X) =  40X, 100X or 400X
    4. Below the magnification label the specimen in neat print.
    5. Measure the length and width of the cell/organism and label below specimen
    6. Using colored pencils, draw the cells/organism clearly. You do not need to fill in the quarter. This is a waste of time. You must draw at least 3 representative organisms on the slide or at least 5 -7 cells of a tissue.
    7. Label anything in the diagram of importance e.g. cell wall, chloroplasts, nucleus etc…

Example Drawing:

 

400X  

Euglena

60-120 µm                              

 

If you or I cannot readily identify your drawings then they are not good enough. These drawings are your study guides for lab practicum, quizzes, tests and the final. You cannot take microscope slides home, and Google images although excellent may not resemble the slides you had in class, SO your drawings must be excellent. Drawings not meeting these expectations will get no credit.  If these are to be turned in redraw them from your journal to a blank paper neatly.