PPT: Living Things | Year 4 Science IGCSE (Cambridge) - Class 4 PDF Download

 Page 1


Living Things
Page 2


Living Things
Bones and skeletons: What is a 
skeleton?
People and many animals have bones inside their bodies.
These bones are joined together to form a skeleton.
A skeleton is a strong frame that supports our body from the inside.
We learn about animals, like dinosaurs, that lived long ago from their skeletons.
Internal Support
The skeleton provides support to the body's tissues and organs.
Joined Structure
Bones connect at joints to create a complete skeletal system.
Historical Record
Fossilized skeletons allow scientists to study and understand creatures that 
lived millions of years ago.
Page 3


Living Things
Bones and skeletons: What is a 
skeleton?
People and many animals have bones inside their bodies.
These bones are joined together to form a skeleton.
A skeleton is a strong frame that supports our body from the inside.
We learn about animals, like dinosaurs, that lived long ago from their skeletons.
Internal Support
The skeleton provides support to the body's tissues and organs.
Joined Structure
Bones connect at joints to create a complete skeletal system.
Historical Record
Fossilized skeletons allow scientists to study and understand creatures that 
lived millions of years ago.
The human skeleton
Our skeletons are made of 206 bones. These bones are different 
sizes and shapes. You can feel your bones through your skin. Bones 
are hard and strong. How many bones in your body can you name?
Total Bones
The complete adult human skeleton contains 206 bones of 
various sizes and shapes
Vertebrae
The spine consists of 26 bones that protect the spinal cord
Hand Bones
Each hand contains 27 bones, allowing for precise movements
Page 4


Living Things
Bones and skeletons: What is a 
skeleton?
People and many animals have bones inside their bodies.
These bones are joined together to form a skeleton.
A skeleton is a strong frame that supports our body from the inside.
We learn about animals, like dinosaurs, that lived long ago from their skeletons.
Internal Support
The skeleton provides support to the body's tissues and organs.
Joined Structure
Bones connect at joints to create a complete skeletal system.
Historical Record
Fossilized skeletons allow scientists to study and understand creatures that 
lived millions of years ago.
The human skeleton
Our skeletons are made of 206 bones. These bones are different 
sizes and shapes. You can feel your bones through your skin. Bones 
are hard and strong. How many bones in your body can you name?
Total Bones
The complete adult human skeleton contains 206 bones of 
various sizes and shapes
Vertebrae
The spine consists of 26 bones that protect the spinal cord
Hand Bones
Each hand contains 27 bones, allowing for precise movements
Why we need a skeleton
Our skeleton has four main jobs or functions. It protects our vital organs, gives our body its shape, allows us to 
move, and helps us grow.
Skeletons protect
The parts inside our bodies are called organs. 
The body organs do important jobs that keep us 
alive and healthy. Our skeletons protect the main 
organs of our bodies.
Skeletons give shape
The bones of our skeleton are strong. The 
skeleton forms a frame that supports or holds up 
the rest of the body and gives the body its 
shape. Our skeleton makes our body firm.
Skeletons allow us to move
Our skeleton helps us to walk, run and move in 
lots of different ways. We can move because 
there are muscles joined to bones of the 
skeleton.
Skeletons help us grow
We grow and get bigger because our skeleton 
grows. An adult's skeleton is much bigger than a 
child's skeleton. An adult's skeleton has stopped 
growing.
Page 5


Living Things
Bones and skeletons: What is a 
skeleton?
People and many animals have bones inside their bodies.
These bones are joined together to form a skeleton.
A skeleton is a strong frame that supports our body from the inside.
We learn about animals, like dinosaurs, that lived long ago from their skeletons.
Internal Support
The skeleton provides support to the body's tissues and organs.
Joined Structure
Bones connect at joints to create a complete skeletal system.
Historical Record
Fossilized skeletons allow scientists to study and understand creatures that 
lived millions of years ago.
The human skeleton
Our skeletons are made of 206 bones. These bones are different 
sizes and shapes. You can feel your bones through your skin. Bones 
are hard and strong. How many bones in your body can you name?
Total Bones
The complete adult human skeleton contains 206 bones of 
various sizes and shapes
Vertebrae
The spine consists of 26 bones that protect the spinal cord
Hand Bones
Each hand contains 27 bones, allowing for precise movements
Why we need a skeleton
Our skeleton has four main jobs or functions. It protects our vital organs, gives our body its shape, allows us to 
move, and helps us grow.
Skeletons protect
The parts inside our bodies are called organs. 
The body organs do important jobs that keep us 
alive and healthy. Our skeletons protect the main 
organs of our bodies.
Skeletons give shape
The bones of our skeleton are strong. The 
skeleton forms a frame that supports or holds up 
the rest of the body and gives the body its 
shape. Our skeleton makes our body firm.
Skeletons allow us to move
Our skeleton helps us to walk, run and move in 
lots of different ways. We can move because 
there are muscles joined to bones of the 
skeleton.
Skeletons help us grow
We grow and get bigger because our skeleton 
grows. An adult's skeleton is much bigger than a 
child's skeleton. An adult's skeleton has stopped 
growing.
Skeletons and movement
Muscles make us move
Muscles make us move. Bones are strong and hard. They cannot bend, but your body can move in many ways. All animals with 
skeletons have muscles attached to the bones.
Muscles allow us to sit, stand, walk, run, bend, and stretch.
They also make it possible to smile, hold a pen, eat, and 
talk.
Muscles are found under the skin and cover the skeleton.
They give your body its shape.
Without muscles, our skeletons would be unable to move.
The combination of rigid bones and flexible muscles 
allows for precise and varied movements.