1. Aim #11: How do scientists make measurements with a microscope?
Date: September 28, 2016
Aim #11: How do scientists make measurements with a microscope?
HW:
1) Worksheet- making measurements due Thursday
2) Quiz Corrections due tomorrow
3) Quiz #2 Thursday
Do Now:

2. 1. What is a compound microscope:
Two lenses:
Objective lens
Ocular/eyepiece lens

3. 2. Why is this better than a magnifying glass?
Larger magnification!
To calculate total magnification:
multiply objective power by ocular power

4. Let’s try some:
What is the total magnification of the following microscopes?
10X ocular and 4X objective
10X ocular and 10X objective
10X ocular and 40X objective

5. 3. What are the parts of the microscope ?
Eyepiece (ocular)
Body tube
Objective lens
Light source
Adjustment
Arm piece
Not labeled: diaphragm

6. Part
Function
A. Eye piece
where you look through to see the image of your specimen (ocular lens)
B. Body tube
the long tube that holds the eyepiece and connects it to the objectives
C. Low power objective
used for low power magnification of the specimen
High power objective
Used for high power magnification of the specimen (not labeled)
D. Light
source of light usually found near the base of the microscope; makes the specimen easier to see
E. Fine adjustment
small, round knob on the side of the microscope used to fine tune the focus of your specimen after using the coarse adjustment knob
Coarse adjustment
used for focusing on low power only (not labeled)
F. Arm piece
part of the microscope that is grasped when one carries the microscope
Base
supports the microscope (not labeled)
Diaphragm
controls the amount of light going through to the specimen   (not labeled)
Stage
holds slide for viewing specimen (not labeled)
Stage clips
on top of the stage which hold the slide in place (not labeled)
Nosepiece
the rotating part of the microscope at the bottom of the body tube; it holds the objectives (not labeled)

7. Aim #12: What are some other tools biologists use in the laboratory?
Date: September 29, 2016
Aim #12: What are some other tools biologists use in the laboratory?
HW:
Characteristics of Life Worksheet
Castle Learning due Wednesday
Unit 1 Test Thursday (p.1) & Friday (p.5)
Do Now:
How many micrometers are in 1 millimeter?
Which part of the microscope controls the amount of light passing through the specimen?
How do you calculate total magnification?
Which parts of the microscope do you use to focus a specimen?

8. Brain Pop: Microscopes
eandindustry/microscopes/

9. 10. Objects appear upside down and reverse under the microscope.
What would the letter “F” look like under the microscope?

10. 11. Measuring with a Microscope
Estimate the # of times the object fits across your field of view
Divide the total diameter by this number
Example:
4000/5 = 800 µm

12. Measuring with a Microscope packets page 23 & 24