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3.2 Seeing
Chapter 3: Observing
3.2 Seeing
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Biologie
Middelbare school
havo, vwo
Leerjaar 1
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Chapter 3: Observing
3.2 Seeing
Slide 1 - Diapositive
Schedule today
Welcome
Looking forward
Learning objectives
Check knowledge 3.1
Instruction
Homework
End of class
Slide 2 - Diapositive
Learning objectives
You will learn
- how your eyes are constructed
- how you are able to see colours
- how you control the amount of light in your eyes
- how your eyes are able to focus
- how you see depth.
Slide 3 - Diapositive
Translate:
Prikkel
A
Sense
B
Stimuli
C
Impulse
D
Neuron
Slide 4 - Quiz
Translate:
Sense
A
Reageren
B
Ruiken
C
Zintuig
D
Prikkel
Slide 5 - Quiz
Wat is a sensory organ?
A
A change in the environment
B
Electrical signals that travel through the nerves to the brain
C
An organ that can sense stimuli and convert them into impulses
D
The processing of impulses from the environment
Slide 6 - Quiz
What is a stimulus?
A
Something you feel when you touch a sharp object.
B
Information from your surroundings.
C
A signal that's being transported through the body.
D
A part of the central nervous system.
Slide 7 - Quiz
A stimulus can be picked up by a sensory organ. Then it is being converted into an impulse. What is an impulse?
A
A chemical reaction of the body.
B
An electrical signal.
C
The same as a stimulus.
Slide 8 - Quiz
What are senses of heat?
A
Senses that are hot.
B
Senses that get hot when you use them.
C
Senses that percieve heat.
D
Senses that only operate during the summer.
Slide 9 - Quiz
The outside of the eyes
Remember these by heart
Slide 10 - Diapositive
Slide 11 - Vidéo
Slide 12 - Vidéo
Slide 13 - Diapositive
Rods and cones
Rods (Staafjes)
: Black, white, grey
- work during nighttime
Cones (Kegeltjes)
: colours
- work during daytime
- Three types: Red, green, blue
Slide 14 - Diapositive
Pupillary reflex (pupilreflex)
= enlarging the pupils in dim light and making the pupils smaller in bright light.
Slide 15 - Diapositive
Accomodating
Accomodating
= Making the eye lens more convex (bol) or flat (plat).
Ciliary muscle (straallichaam)
= A muscle surrounding the eye lens.
Lens is attached to
suspensory ligaments
(lensbandjes).
Slide 16 - Diapositive
Slide 17 - Diapositive
Glasses
accomodating or eyeball length
Far sighted (Verziend):
Short eyeball, only clear vision of distant objects.
Short-sighted (Bijziend):
Long eyeball, only clear vision of nearby objects.
Slide 18 - Diapositive
What?
Be careful, this paragraph has a lot of assignments.
Finish up where you last left off.
Finish paragraph 3.2
How?
In your workbook (or computer). Use the information from your textbook. (
Use the textbook when learning by heart!!)
Help?
You may gently consult with your neighbor or listen to music. Raise your hand if the two of you can't figure it out.
Time?
15-25 minutes
Finished?
Done? --> Have you finished 3.1?
Practice the eye using a proper learning technique
Make a compilation of the most important images and what they show
Product
You know what to prepare and learn from 3.2
Slide 19 - Diapositive
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