The Immune System

Lab Brief #6

🎯 Your mission

Learn the rule. Then catch nature using it.

⚡ The twist

Every species solves the same problem differently.

What you'll learn

The immune system defends the body against disease-causing germs. White blood cells identify and destroy bacteria and viruses. Vaccines train the immune system to recognize specific threats.

Key words

organ system
A group of organs that work together to do a job.
cell
The tiny building block that makes up all living things.
immune system
The body's defense team that fights off germs and sickness.

Make a hypothesis first

Before you watch: what do you think it'll do?

Say your guess out loud — then find out if you were right.

Step 1 of 4 · Read

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

Step 2 of 4 · Do

Build a model of the respiratory system using a plastic bottle, balloons, and a straw. Show how the diaphragm helps you breathe.

Step 3 of 4 · Observe

Use your senses (except taste) to describe what you notice.

Step 4 of 4 · Record

Write a summary of your findings in 3-5 sentences.

Question 1 of 3

What system defends the body against germs?

How sure are you?😐 maybe

Question 2 of 3

What does the respiratory system do?

How sure are you?😐 maybe

Question 3 of 3

What carries oxygen in the blood?

How sure are you?😐 maybe

Mind = blown

🌳 Trees can talk to each other through underground fungus networks.

Nice work!

You got 0 of 3 right.

Next: Neurons and Nerve Signals All lessons

🎯

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✨ More to explore

🌍 Where you see this in real life: This is why plants grow toward windows and why scabs form.

🏆 Stretch challenge (try it this week): Watch a plant or pet for 5 minutes today and write down what you noticed.

👨‍👩‍👧 For the dinner table: “Tell me something you noticed about your own body today.”

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