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Lesson 5 of 7 · Ecosystems

Lesson30 XP🌿 Wild Jungle

Predator and Prey Balance

🧪Lab Brief #5

Ecosystems.

🎯 Your mission

Learn the rule. Then catch nature using it.

⚡ The twist

What the body does in one minute is wilder than any cartoon.

🤯

Mind = Blown

🦠 You have more bacterial cells in your body than human cells.

🔮

Make a hypothesis first

Guess: how does the body solve this problem?

What You'll Learn

Predator-prey relationships help keep ecosystems balanced. When prey populations increase, predator populations grow too. When predators reduce prey numbers, predator populations then decline.

Key Words

Tap a word to see its definition.

Steps

Step 1Read

Look at the vocabulary words and write a definition for each in your own words.

Step 2Do

Create a detailed food web for a local ecosystem. Include at least 8 organisms and use arrows to show energy flow from producers to top predators.

Step 3Observe

Compare the before and after states.

Step 4Record

Write your conclusion: did the results match your hypothesis? What would you change next time?

Check Your Understanding

Question 1

1 of 3

What is the difference between a predator and prey?

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Where you see this in real life

This is why plants grow toward windows and why scabs form.

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Stretch Challenge

Try this in real life this week.

Watch a plant or pet for 5 minutes today and write down what you noticed.

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For the dinner table

Tell me something you noticed about your own body today.

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Predator and Prey Balance

Learn the rule. Then catch nature using it.

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🖨️

Checkout complete lesson on Ecosystems for 3rd Grade

Get the full Ecosystems track as a printable PDF — all lessons, worksheets, and answer keys.

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Predator and Prey Balance — Ecosystems | 3rd Grade Science | LittleActivity