U4 B2 1HVTTO

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

B2 The structure of bones

• Take off your jacket
  
• Put your things on your desk
  

       Book, notebook, pencil case

• Bag on the floor
  
• Read pages 16-17

Lessongoals

• You can describe the structure of bone tissue and cartilage tissue.
• You can describe how the composition of the bones changes during a person's life

Homework U4 B2

Asgmt 1-7, 4c

OR challenge

Asgmt 5-9

Wheel of homework

Go to Lessonup.app and use this code

Reward

Penalty

1 word

1 word

1 word

Which of these bones is not connected to a vertebra?

1. Pelvis
2. Kneecap
3. Skull
4. Rib

What function of a skeleton is shown in the story underneath?
Jack is in love with a girl from his class. He is most attracted to her face.

What isn't a function of the skeleton?

1. Giving shape to the body
2. Making movement possible
3. Keeping organs in their spots
4. Protecting organs

Calcium phosphate

• Makes bone strong/rigid
• Doesn't bend

Collagen

• Makes bone slightly bendable
• Not strong/rigid

Ingredients of bone

Imagine, you could remove all the collagen from a bone.
How would that bone change?

Think-Pair-Share

• Think: Work on the assignment on your own.
• What is shown in the graph? What does it mean?
• What does this graph mean for a human?

• Pair: Discuss and compare with your neighbour, improve your answer
• Share: Talk about given answers during plenary session.

Cartilage

Bone

cartilage cell

extracellular material

extracellular material

bone cell

process

canal

Mostly collagen in the extracellular material.

Makes cartilage very bendy and flexible

A lot of calcium phospate, but also some collagen in the extracellular material.

Makes bones rigid, but also keeps it from breaking

Bones need blood to stay alive/strong canals are filled with bloodvessels.

Assignment table

Make a table containing the differences between the 2 tissues

Fontanelles are openings in between the bones of the skull

Shrinking of the fontanelles

Fontanelles close up over time, this strengthens and closes the skull. The proces takes about 1,5 years.

What is the main difference between cartilage and bone tissue?

1. Bone tissue is harder than cartilage.
2. Cartilage is denser than bone tissue.
3. Cartilage provides blood supply to the body.
4. Cartilage is made up of living cells. Bone isn't

What mineral provides bones with their strength and hardness?

1. Calcium phosphate
2. Potassium
3. Sodium
4. Collagen

Which type of tissue is better at withstanding pressure?

1. Neither bone tissue nor cartilage can withstand pressure.
2. Both types of tissue are equally good at withstanding pressure.
3. Cartilage is better at withstanding pressure than bone tissue.
4. Bone tissue is better at withstanding pressure than cartilage.

What are fontanelles?

1. Glands in the digestive system
2. bones of the skull of a baby, before they fuse together
3. Type of fountain
4. Soft spots between the bones of a baby's skull

What you should do: U4 B2

• Pages  16-20
• Asgmt  1-7, 4c

OR challenge

• Asgmt 5-9

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: U4 B2

• Pages 16-20
• Asgmt 1-7, 4c

OR challenge

• Asgmt 5-9

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

Tidy Duty

Today these people are on tidy duty

• Desks: empty and straight
• Chairs:  underneath the desks
• Floor: no rubbish