Why we need a skeleton? booklet
Why we need a skeleton? booklet
- Unit 1: Living things
- Unit 2: Energy
- Unit 3: Materials
- Unit 4: Earth and its habitats
- Unit 5: Light
- Unit 6: Electricity
🌟 This Topic is About...
- 🦴 I will describe what the skeleton does for the body.
- 📏 I will measure the length of different bones.
- 💡 I will learn why it’s better to measure in standard units.
- 📊 I will record my data clearly in a table.
Let’s explore how our skeleton helps us move and stay strong! 💪🦵
🌟 Key Words
- function
- length
- muscles
- organs
- protect
- support
📖 Tap to Learn the Meanings!
- ⚙️ function: the job or purpose of something.
- 📏 length: how long something is from one end to the other.
- 💪 muscles: parts of your body that help you move.
- 🫀 organs: special parts inside your body that do important jobs, like the heart or lungs.
- 🛡️ protect: to keep something safe from harm.
- 🧍 support: to hold up or keep something steady.
Great job learning new words! 🎉
Our skeleton has four main jobs or functions.
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. We cannot squash our body easily because we have a skeleton.
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. Muscles are parts of the body that help us to move.
🦴 FUN QUESTIONS — The Skeleton
1. How does the skeleton protect the brain? 💀🧠
🌟 Show answer
2. Which organs does the rib cage protect? 🦴🛡️
🌟 Show answer
3. Why do we need strong bones? 💪
🌟 Show answer
4. Explain how our skeleton helps us to move. 🚶♀️
🌟 Show answer
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.
Quick Fact
Most bones lengthen at their growth plates and finish growing in the late teens. The skull’s plates fuse fully in adulthood.
🔬 Think like a Scientist: Measuring Bone Lengths
🤔 Question: How long are different bones in our arms and legs, and how do our measurements compare?
🧰 You will need: a tape measure 📏
👥 Work with a partner.
📝 Method:
- Use the tape measure to measure the length, from end to end, of each other’s:
- upper arm bone
- upper leg bone
- lower leg bone
- Record the measurements in a table like the one shown here. 🧮
| Bone | Length in cm | |
|---|---|---|
| Me | Partner | |
| Upper arm bone | ||
| Lower arm bone | ||
| Lower leg bone | ||
❓ Questions:
🪞 How am I doing?
- How well can I measure the length of bones?
- How well can I record data in a table?
🌟 Tap to See Answers
- 1: Answers will vary—compare the numbers in your table to decide whose bones are longer.
- 2: A teenager’s bones are usually longer than a child’s because they are still growing during puberty.
- 3: Not a good method. Hand sizes are different for each person, so results won’t be accurate or comparable. Use standard units (cm) with a tape measure.
Great measuring and data recording—well done, scientist! 👏📏