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L2: What are bones made of?
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Homework types of skeletons
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Get ready:
Notebook + Pen
Homework types of skeletons
LessonUp
HW Uploaded?!
Slide 1 - Diapositive
Discussion of Homework
Sheets 'Type of skeletons'
5 minutes
Slide 2 - Diapositive
Slide 3 - Vidéo
Slide 4 - Diapositive
Slide 5 - Diapositive
Slide 6 - Diapositive
lesson 2: What are bones made of?
Slide 7 - Diapositive
Experiment: Bones
What are bones made of?
Collagen: Flexibility
Calcium & Phosphorus: Hard
What happened during the experiment?
Slide 8 - Diapositive
Bones are alive?
Bone = hard and solid
Cartilage = soft and rubbery
Slide 9 - Diapositive
Layers of the bone
1. Periosteum (pare-ee-OS-tee-um)
-membrane that contains nerves and blood vessels
2. Compact bone
3. Cancellous bone (KAN-sell-us)
(sponge like)
4. Bone marrow
Slide 10 - Diapositive
How do bones grow?
300 bones (Baby) -> 206 bones (adult)
Cartilage as baby becomes bone with help of calcium
Bones fuse together
Age 25 -> growing is finished
Slide 11 - Diapositive
Slide 12 - Vidéo
What type of skeleton do we have?
A
Exoskeleton
B
Endoskeleton
C
Liquid skeleton
Slide 13 - Quiz
What do bones mainly need to remain hard?
A
Calcium
B
Collagen
C
Water
D
Cartilage
Slide 14 - Quiz
What is the function of bone marrow?
A
Protection
B
Shape
C
Movement
D
Blood cell production
Slide 15 - Quiz
What is the periosteum?
A
A thin membrane around the bone
B
Cartilage at the end of the bone
C
A bone located in the leg
Slide 16 - Quiz
What are vertebrates?
A
Animals that live underwater
B
Animals that shed their skin once in a while
C
Animals that have a spinal column
D
Animals that have very long hair
Slide 17 - Quiz
What happens when you put a bone in an acidic solution?
A
It becomes brittle
B
It becomes harder
C
It becomes flexible
D
noting happens
Slide 18 - Quiz
Why does the bone become flexible?
A
Because the collagen dissolves
B
Because the calcium dissolves
Slide 19 - Quiz
Homework
Worksheet bones
Update your mind map with topics of lesson 2 (screenshot)
Slide 20 - Diapositive
Slide 21 - Diapositive
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