Microscopes and drawings

Microscopes and drawings
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BiologieMiddelbare schoolvwoLeerjaar 1

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Microscopes and drawings

Slide 1 - Diapositive

Learning how to do Research
Microscope.  (p. 137-143)

 Read 'Parts of the Microscope' and 'Preparation'
- Make 1 t/m 3 (p. 139-140)

(     )
(              ) 
=large knob
=small knob

Slide 2 - Diapositive

microscope steps
  1. put slide under microscope
  2. turn the smallest objective (4x)
  3. put on the light
  4. use large knob to focus
  5. turn larger objective (10x)
  6. use small knob to focus!!
  7. turn objective to 40x
  8. use small knob to focus!!

Slide 3 - Diapositive

the object we put under a microscope
- has to be small
- has to be very thin
- has to be put on a slide

Slide 4 - Diapositive

slide preparation
- slide = a small piece of glass
- put the specimen on the glass
- add a drop of water ór colour
- put a coverslip on top

Slide 5 - Diapositive

Scientific drawing pg. 63
Goal: to show the structure of what you see
Important:

  • No sketching/coloring/shading: only outlines!
  • Only draw what you see
  • Everything with pencil, no pens

Slide 6 - Diapositive

Biological drawings
What differences do you see?





                                 natuurgetrouw                    schematisch

Slide 7 - Diapositive

Views and cross-section
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External view = buitenaanzicht
longitudinal section = lengtedoorsnede
transverse section = dwarsdoorsnede

Slide 8 - Diapositive

Longitudinal section
External view
Transverse section
Schematic drawing
True-to-life drawing

Slide 9 - Question de remorquage

Example of a scientific drawing

Slide 10 - Diapositive

Practical activity
  • First, read the drawing rules on p. 64
  • Make a true-to-life drawing of the external view of a m       mushroom
  • Follow the drawing rules!

Slide 11 - Diapositive