5.4 Hearing 1HVTTO

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 1

5.4 Hearing

• Jacket in your locker
• Put your things on your desk

       Laptop/Book

       Notebook, pencil case

• Bag on the floor
  
• Read pages 126-127

Lessongoals

• You can name and recognize the parts of the ear
• You can explain how a sound is heard
• You can explain how the ear helps with balance

Homework 5.4

Asgmt 21-28

Secret Student

This lesson, I have randomly picked someone to be the secret student.

I pay special attention to:

• Your use of English
• Your participation in the lesson

At the end I will reveal the secret student, If I can give them positive feedback, they also earn 1/3 +0,5 OR +1 cm² cheat sheet.

Wheel of homework

Go to Lessonup.app and use this code

Reward

Penalty

Rewards

• +1 cm2 cheatsheet = you get to make a cheatsheet for a test. This starts being 1 by 1 cm. Everytime you earn this it gets 1 cm bigger to a max of 4 by 4 cm.
• 1/3 +0.5 = If you earn this 3 times you get to add 0,5 to one of your biology marks.
• Snitch = You can pick a classmate who also is checked for homework, you earn two V's (having 3 earns you a 1/3 +0,5)
• Too bad = You only get one V
  

penalties

• 45 min extra worktime = you need to come after school and do homework, this will last for 45 min or until the task is done
• Coloringpage = You get to pick a coloringpage, You need to color it and perform tasks that might be on it. You need to hand it in during the next lesson, If you don't you get 2 marks.
• 2/1 marks = a mark is an X, if you get 3 of these you will automaticly earn the 45 min extra worktime.
• Snitch = You can pick a classmate who also is checked for homework
• Lucky! = You don't get a penalty

What part of the eye changes light stimuli into impulses?

1. Pupil
2. Lens
3. Retina
4. Optic nerve

Eye
	Chemicals in air
Tongue

Finish the table

Nose

Chemicals in food

Light

Sound

Ear

Stimulus

location of sensory organ

What part of the retina is best at seeing colours?

1. Sclera
2. Fovea
3. Choroid
4. Blind spot

The ear

External part

• 'catches' sounds

Internal parts

• Bring sound to the receptors
• Help you really hear the sound
• Sense of balance

Pair-Share

• Pair: Discuss and compare with your neighbour
• Talk about it: Why do we have 2 ears? How is that better than 1?
• Think about it: What can not be done with 1 ear, that can be done with 2?
• Share: Talk about given answers during plenary session.

Hearing a sound

Sound is produced

The ear (pinna) 'catches' the sound stimulus and makes it go into your ear canal

The sound stimulus makes the eardrum vibrate.

This in turn makes the hammer, anvil and stirrup vibrate.

Finally the vibration goes into the cochlea.

Inside the cochlea, sensory receptors turn the stimulus into impulses, which they send through the autitory nerve.

The auditary nerve sends the impulses towards the brain

The brain recognizes the impulses. At this point you become aware of the sound.

Because there are two ears, the brain can use impulses from both to tell where sound is coming from.

The sense of balance

The semicircular canals work like a level     . 

Fluids inside them move and allow you to notice movement, acceleration and position.

A level is a tool used by many people to tell if the thing they are making is straight

What you should do: 5.4

• Pages TB  126-127
• Asgmt  21-28 WB pgs 128-131

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

What you should do: 5.4

• Pages TB 126-127
  
• Asgmt 21-28 WB pgs 128-131

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

Explain: Without your ears, going to an amusement park would be quite boring.

Secret Student

The secret student was .......

I paid special attention to:

• Your use of English
• Your participation in the lesson

If I can give them positive feedback, 

they also earn 1/3 +0,5 OR +1 cm² cheat sheet.

Tidy Duty

3 people each lesson

• Desks: empty and straight
• Chairs:  underneath the desks OR end of day: on the desks
• Floor: no rubbish