SECTION 1
Why Do We Wonder About Living Things?
People have always watched animals and plants. They noticed something cool!
Every living thing needs certain things. Long ago, people started to see this pattern. A pattern is when something happens again and again.
Long Ago • Farmers Watch Plants
Long Ago • People Care for Animals
Later • Scientists Look for Patterns
Today • You Are a Scientist Too!
Here is our big question: What do ALL living things need? Let us find out together!
SECTION 2
What Do Living Things Need?
Every living thing needs certain things to stay alive. That means animals, plants, and even you!
Water
Food or Energy
Air
A Place to Live
KEY TAKEAWAY
SECTION 3
See the Pattern!
Look at this picture! It shows three living things. They are a dog, a child, and a flower. Can you see what they all need?
Did you see it? Every living thing has the same needs. Animals eat food for energy. Plants need light for energy. But they all need energy, water, and air. That is a pattern!
SECTION 4
How Do We Know Something Is Alive?
How can you tell if something is alive? Living things do special things!
Living things grow. That means they get bigger over time. You are growing right now! A tiny seed grows into a big plant.
Living things need things. They need water, air, and energy. Without these things, they cannot live.
Non-living things do not grow. They do not need water or air. A rock does not grow. A toy does not need water. They are not alive.
Scientist Tip!
SECTION 5
Living Things and Non-Living Things
Let us sort some things! Some things are alive. Some things are not alive. Look at this picture to see which is which.
Do you see the pattern? Every living thing on the left side grows and has needs. Every non-living thing on the right does not grow and does not have needs. The same thing happens again and again!
SECTION 6
Let Us Think Like Scientists!
Let us practice! Imagine you visit a farm. You see a horse, a rabbit, and a tomato plant. What do they all need?
Farm Visit — Finding the Pattern
- 1
Step 1 — Ask a Question
Scientists start by asking a question. Our question is: What do the horse, rabbit, and tomato plant all need? - 2
Step 2 — Make Observations
We watch carefully. The farmer gives the horse water. The farmer gives the rabbit water. The farmer waters the tomato plant.They all need water! - 3
Step 3 — Look for More Clues
The horse eats hay. The rabbit eats carrots. The tomato plant grows outside in the light. All three need energy to grow!They all need energy! - 4
Step 4 — Find the Pattern
The horse, the rabbit, and the tomato plant all need water, energy, and air. They are all alive. They all grow and change over time.Pattern: ALL living things need water, energy, and air!
SECTION 7
Animals and Plants — Same and Different
Animals and plants are both alive. But they get their energy in different ways! Let us compare.
| What They Need | Animals 🐾 | Plants 🌱 |
|---|---|---|
| Water | Yes! They drink it. | Yes! They soak it up. |
| Energy | They eat food. | They need light. |
| Air | Yes! They breathe. | Yes! They need air too. |
| Do they grow? | Yes! They grow bigger. | Yes! They grow bigger. |
Animals and plants both need water, energy, and air. They both grow!
KEY TAKEAWAY
SECTION 8
What You Will Learn Next!
Great job learning about patterns! As you grow bigger, you will learn even more cool things about living things.
| What You Know Now 🌟 | What You Will Learn Later 🚀 |
|---|---|
| Living things need water. | How water helps plants and animals grow. |
| Living things need energy. | Where plants and animals get energy. |
| Living things grow and change. | The life cycle of plants and animals! |
You are building a strong foundation for future science learning!
For now, remember the big pattern: all living things have needs. You are already thinking like a real scientist!
SECTION 9
Practice Problems
Imagine you visit a pond. You see a frog sitting on a lily pad. You see a duck swimming in the water. You see cattails (tall plants) growing by the edge. You also see a big gray rock in the water. Use what you know to answer these questions!
Question 1: CONCEPTUAL
Show answer
Question 2: BASIC
Show answer
Question 3: INTERMEDIATE
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Question 4: APPLIED
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Question 5: CRITICAL THINKING
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SUMMARY
What We Learned Today!
Summary
Today we learned that all living things have needs. They all need water, energy, and air. Animals eat food for energy. Plants need light for energy. But they all need energy to grow! Living things also grow and change over time. Non-living things like rocks and toys do not grow and do not have needs.
When we see the same thing happening again and again, we call it a pattern. The big pattern is: ALL living things need water, energy, and air. You found this pattern by making observations — that means watching carefully, just like a real scientist! Keep looking for patterns everywhere you go!