U2 The microscope 1HVTTO

The microscope
  • Put your things on your desk
       Book, Notebook, Pencil case
  • Bag on the floor
  • Read pgs. 137 t/m 138
timer
4:00
Lessongoals
  • You can name all parts of a microscope
  • You know how to use a microscope
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Slide 1: Tekstslide
BiologieMiddelbare schoolhavo, vwoLeerjaar 1

In deze les zitten 14 slides, met interactieve quizzen, tekstslides en 1 video.

time-iconLesduur is: 45 min

Onderdelen in deze les

The microscope
  • Put your things on your desk
       Book, Notebook, Pencil case
  • Bag on the floor
  • Read pgs. 137 t/m 138
timer
4:00
Lessongoals
  • You can name all parts of a microscope
  • You know how to use a microscope

Slide 1 - Tekstslide

Today
  • Parts of a microscope
  • Using a microscope
  • Time for homework
  • End

Slide 2 - Tekstslide

A microscope magnifies objects.
What does that mean?
Explain in English

Slide 3 - Open vraag

Slide 4 - Video

stage clips
large knob
small knob
diaphragm
eyepiece
revolving nosepiece
bulb/lamp
stage
arm
objective lens
tube/barrel

Slide 5 - Sleepvraag

Magnification
  • Eyepiece : 10x
  • Objective lenses
          Red: 4x
          Yellow: 10x
          Blue: 40x
  • Total magnification = eyepiece x objective lens

Slide 6 - Tekstslide

You're using a microscope
The eyepiece magnifies 5x
The objective lens magnifies 40x.
What is your total magnification? (only enter a number)

Slide 7 - Open vraag

Slide
Coverslip
Specimen

Slide 8 - Tekstslide

Getting ready
  1. Use the arm and  base to hold the microscope.
  2. Red lens above the stage.
  3. Make sure the stage is as low as possible
  4. Bulb turned on
  5. Diaphragm open

Slide 9 - Tekstslide

Using the microscope
  1. Put the specimen underneath the stage clips on the stage
  2. Keep turning the large knob, while looking through the eyepiece, until the image is in focus.
  3. You have magnified your object 40x 
  4. Rotate to the yellow lens
  5. Keep turning the small knob until the image is in focus.
  6. You have magnified your object 100x
  7. Rotate to the blue lens
  8. Keep turning the small knob until the image is in focus.
  9. You have magnified your object 400x

Slide 10 - Tekstslide

Tidying up
  1. Red lens above the stage
  2. Make sure the stage is as low as possible
  3. Remove the specimen.
  4. Bulb turned off
  5. Use the arm to hold the microscope

Slide 11 - Tekstslide

What you should do:
  • Read pages  137-141
  • Do asgmt  1,2,3 pgs. 139, 141

Done with the above?
  • Work on the next chapter(s)
  • Learn for the test 
  • Make other homework
  • Read a book
Zs = Working in Silence
  • No asking questions
  • Silent, don't disturb anyone
  • Stay at your  desk
timer
6:00

Slide 12 - Tekstslide

What you should do:
  • Read pages 137-141
  • Do asgmt 1,2,3 pgs. 139, 141

Done with the above?
  • Work on the next chapter(s)
  • Learn for the test 
  • Make other homework
  • Read a book
Zw = Working with whispering
  • Teacher is available for questions
  • Only whisper with the student next to you
  • Stay at your  desk

Slide 13 - Tekstslide

Tidy Duty
Today these people are on tidy duty
  • Desks: empty and straight
  • Chairs:  underneath the desks
  • Floor: no rubbish

Slide 14 - Tekstslide