Different Kinds of

Microscopes

12-10-13Title a NEW page: Unit 4 Cells & Microscopes

On the NEXT page begin with the lesson:

Intro to Microscopes

Key Question: What is the correct way to

use a microscope?

Initial thoughts:

Evidence #1: Notes & W.S.

• After writing the above title, paste the two handouts into your notebook.

What is the difference between a simple and a compound microscope?

Simple: one lens (magnifying glass)

Compound: 2 or more lenses

Simple vs. Compound

VideoClip

To calculate the magnifying power of a compound microscope:

Multiply the lens powers together!

Parts of the Microscope

Disc Diaphragm

• Controls: amount of light• Located: Underneath stage

(dial)

• The eyepiece has a magnifying power of 10X by itself

• Low power: 4X; Red color band; and has a TOTAL magnification of 40 X.

• Low power is mainly used for: large objects/scanning

• Medium power: 10 X; yellow color and has a TOTAL magnification of 100 X

• High power 40X; blue color and has a TOTAL magnification of 400 X

• High power is mainly for: small objects/details

Steps to get started

• 1. Make sure it is on LOW power!

• 2. The stage should be all the way UP (close to the objective lens) – You focus by slowly moving the

stage DOWN

• 3. Check the light setting (should be at 1) How to Use the

Microscope Clip

Carrying the Microscope

• 2 Hands!

Some Definite Nevers

1)NEVER use the coarse focus knob

while on medium or high power.

2)NEVER touch the lens or the light.

3)NEVER change the objective/lens

while looking through the eyepiece.

Putting away the Microscope

1) It should be on lowlow power.

2) The cord is wrapped wrapped around basearound base.

3) The stage is all the way downdown (do

this with the coarse focus knob)

4) The light switch should be offoff.

What if you can’t get your object into focus?

• Check to see if the lenses are clicked into place

• Check that your disc diaphragm is in place (not on the lowest or highest settings)

• Clean your lenses using ONLY LENS PAPER.

•Go back to low power & start over!

12/11/13

• Evidence #2: Virtual Microscope Lab Observations:

• Paste the observations page and the drawing tips into your notebook.

Update your grades Page

Date Lesson/Activity Completed(Stamp)

Section Check (___/3)

12/3 Human Systems Review (stamped)

12/13 Prevent Brain Drain (stamped)

12/17 Brain Anatomy (stamped)

January

Total 6/6

1/8 Unit 3 Vocab

Today’s Goal• To learn the parts of a microscope and how to

use and focus a microscope using a virtual simulation.

• Log on to your computer and go to swift documents “Virtual Microscope Lab”

• Go to the website on instructions:

http://www.udel.edu/biology/ketcham/microscope/

Drawings• Refer to the “Microscope Drawing Made

Easy”

Analysis Questions1. How do you calculate the total magnification of the

microscope?

2. A) Describe how the microscope CHANGES the position of the letter “e”.

B) In what direction does the slide appear to move (through the microscope) when you move it to the left?

3. Compare the drawing of the onion root tip and the cheek smear. How are the cells different?

SummaryIn a well developed paragraph:

– What did you think before about the correct way to use a microscope? (look back at your initial thoughts)

– What did you learn the correct way to use a microscope? Be specific! (look back at your evidence section).

– What evidence do you have that you learned this?– Further Thoughts

Make sure this is thoughtful and thorough.

Reflection

• Create a warning label to make sure the microscope does not get damaged.

Big Idea

12-09-13 Do Now

• Pick up the green slip and the pre-test on the back table.

• QUIETLY Start your Pre-test; when done turn in to the inbox

• In your journal, on the next full page write:

Unit 4 – Microscopes & CellsPaste the green learning targets below

Class Time

• Log on to SWIFT and find the Vocabulary assignment.

• Work on getting the vocabulary done. The book definitions are DUE FRIDAY.

• Use the green Life Science Books & Glossary