Next, Mr. Finley showed us how to use a stereoscope. First, adjust the eyeholes so you can see into the stereoscope. Then, adjust the magnification so the object is seeable. Next, adjust the focus knob to get the object in focus. Lastly, hit the red button to turn on the light. Also, when you carry it, hold it by the base and the neck.
Next, we observed our petri dishes under the microscope. First, we looked at a bacteria colony, and it showed up as a huge red circle that took up nearly everything we could see through the stereoscope. Then we looked at another bacteria colony, and it appeared to be a large pancake with a large lump of butter on top. The mold looked like a large forest of white hair. Once we finished looking at the petri dish, we started typing our conclusions for the lab report.
Here is some vocab we defined in class today:
Stereoscope-a microscope with two eyeholes, used to look at bigger things than a microscope
Microscopic-Something you cannot see with your eyes
Colony-A group of organisms all in one place
Something that may be tricky is being able to see through a stereoscope. The reason many people screw it up is that they don't have the eyeholes in the right place. A good way to adjust them properly is to put your eyes up against them and slowly move the eyepieces in or out. Eventually you should be able to see through them, becaus you will have gone throught the entire range of viewing angles.
Here is a link to a lab report rubric from another school disttrict
LG Period 8