dominique238
dominique238 Mar 24, 2026 • 0 views

What is air? A Grade 4 science explanation.

Hey there! 👋 Ever wonder what air is made of? It's all around us, but we can't see it! Let's explore this invisible yet super important stuff together. 💨
🔬 Science
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📚 What is Air?

Air is a mixture of different gases that surround the Earth. It's what we breathe to stay alive! Although we can't see it, air is everywhere.

🎯 Learning Objectives

  • 🌍 Understand that air is a mixture of gases.
  • 💨 Identify the main components of air.
  • 🫁 Explain why air is important for living things.

🧪 Materials

  • 🎈 Balloons
  • 🪴 Small potted plant
  • 🕯️ A candle
  • matches (for adult use only)

☀️ Warm-up (5 mins)

Ask students: What are some things that need air to work or live?

👨‍🏫 Main Instruction

What is Air Made Of?

Air is mostly made up of these gases:

  • 💨Nitrogen (about 78%): Helps plants grow.
  • 🫁Oxygen (about 21%): What we breathe!
  • 💧Other Gases (about 1%): Includes argon, carbon dioxide, and tiny bits of other gases.

Why is Air Important?

  • 🌱Breathing: Animals and plants need air to breathe.
  • 🔥Fire: Fire needs oxygen to burn.
  • ☁️Weather: Air helps make clouds and wind.

📝 Activity: Balloon Experiment

  1. 🎈 Blow up a balloon. What's inside? (Air!)
  2. 🪡 Let the air out. Where did it go? (Everywhere!)

✅ Assessment

Question 1: What are the two main gases in the air?

Answer: Nitrogen and Oxygen

Question 2: Why do we need air?

Answer: To breathe and stay alive.

Question 3: Name one other thing that needs air.

Answer: Fire

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