What is air?

Primary EducationGrade 2ScienceCV-PRI-G02-SCI-U07-L0145–60 min

You will learn

  • Say what air is.
  • Give evidence that air is there.
  • Name what uses air.
  • Explain why air matters.

Version 0.2 · expanded edition · built from cited public sources Content is based on the official frameworks and sources listed under Sources and standards. No official endorsement is claimed. Written in the style of common primary school assessments. No exam result is promised.

Student lesson

The lesson in 60 seconds

  1. Air is all around us.
  2. We cannot see air, but we can feel it.
  3. Living things need air.
  4. Air contains oxygen.

Words to know

air
the mixture of gases around us
oxygen
the gas in air that living things need
invisible
cannot be seen
breathe
to take air in and out

1. Discover: The fan and the paper

On a hot day, Mina turns on a fan. A paper on the desk flutters. “What is moving the paper?” she asks. Her teacher smiles. “The air. You cannot see it, but you can feel it on your face.”

Think: How do you know air is there?

2. Understand: Air

Idea 1: What is air?

Air is the mixture of gases around us. It is invisible, but we can feel it moving as wind or from a fan.

Idea 2: What needs air?

People, animals and plants all need air. We breathe in oxygen from the air. Fire also needs air to burn.

Idea 3: Evidence of air

We see air at work when a balloon fills, a flag flaps or bubbles rise in water. We feel it when we wave a card near our face.

Remember: Air is a mixture of gases that we cannot see but can feel. Living things need it.

3. Worked examples

Example 1 (I show you): Evidence

A flag flaps.

  1. Flag moves.
  2. Something pushes it.
  3. Moving air.

Answer: Moving air pushes the flag.

Example 2 (We do it together): Who needs air?

A fish, a bird, a plant.

  1. All need air.
  2. Fish use air in water.
  3. Plants too.

Answer: All living things need air.

Example 3 (You try): Feel it

Wave a card.

Show the steps and answer
  1. Feel a breeze.
  2. No one blows.
  3. Air moves.

Answer: Air can be felt.

Did you know?

The air in a normal room is about one fifth oxygen and four fifths nitrogen.

Why this matters

Air lets us breathe and keeps our world alive.

4. Explore: Feel and see air

Use cards, balloons and bubbles to show air.

  1. Wave a card.
  2. Blow up a balloon.
  3. Blow bubbles in water.
  4. Record what you notice.
Think about it: what did you notice?

What did you notice? Air is invisible but has effects.

Safety first: Blow gently. Do not put balloons in your mouth when deflating. Keep bags away from faces. Wash hands.

5. Practise

Say it in a sentence

Use these starters when you talk about the lesson. Say them out loud.

  • Air is all ___ us.
  • We cannot ___ air.
  • We ___ in oxygen.
  • A fan moves ___.

Guided practice

Question 1. What is air?

Mixture of gases.

Question 2. Can we see air?

No.

Question 3. Can we feel air?

Yes.

Independent practice

Level 1: Start

  1. What is air?
  2. Can we see air?
  3. Can we feel air?
  4. What do we breathe in?
  5. Name one thing that needs air.

Level 2: Grow

  1. Why does a flag flap?
  2. Why is air invisible?
  3. Why do plants need air?

Level 3: Stretch

  1. Draw evidence of air.
  2. Explain why air matters.
  3. Plan a test for air.

Answers are in the answer key below. Try first, then check.

6. Apply: Science in everyday life

When do you feel air?

Show a sample answer

Fans and wind.

Another one. Tell a family member one thing from this lesson. Use the words you learned.

Show a sample answer

A clear sentence that uses at least one word from Words to know.

7. Common mistakes

Mistake: “Air is nothing.”
Fix: Air is matter.
Another mistake: “Only people need air.”
Fix: All living things do.

8. Lesson summary and revision card

I can…

  • I can say what air is.
  • I can give evidence that air is there.
  • I can name what uses air.
  • I can explain why air matters.

9. Check and master

Answer all 14 questions. You will see feedback after each one.

1. Air is a mixture of …

2. We … see air

3. We can … air moving

4. We breathe in …

5. A flag flaps because of …

6. A fan moves …

7. Plants need …

8. Fire needs …

9. We blow …

10. Bags are kept away from …

11. Bubbles in water show …

12. Air is all … us

Challenge 1. Wave a card near your face. You feel a breeze. What moved?

Challenge 2. Which uses air?

Your result appears here after you answer every question.

10. Key takeaways

  • Air is all around us.
  • We cannot see air, but we can feel it.
  • Living things need air.
  • Air contains oxygen.

11. Next lesson

Next lesson: Evidence that air occupies space. Keep going with the next idea in this course.

Exam practice

These questions are written in the style of common school and international primary assessments. Try them on your own, without looking back. Then check your answers in the marking guide. The marks are shown in brackets.

  1. What is air? [2 marks]
  2. Give two evidences. [2 marks]
  3. Who needs air? [2 marks]
  4. What do we breathe in? [1 mark]
  5. Safety rule? [1 mark]

Total: 8 marks.

Marking guide and model answers
  1. Mixture of gases [1]; around us [1]
  2. Any two [1 each]
  3. Animals [1]; plants [1]
  4. Oxygen [1]
  5. Blow gently [1]

Score guide: 7 to 8 = secure. 5 to 6 = nearly there, revise the parts you missed. Under 5 = work through the lesson again with a grown-up.

Printable worksheet

  1. What is air?
  2. Can we see air?
  3. Can we feel air?
  4. What do we breathe in?
  5. Name one thing that needs air.
  6. Why does a flag flap?
  7. Why is air invisible?
  8. Why do plants need air?
  9. Draw evidence of air.
  10. Explain why air matters.

Homework

Find three signs of air at home. Draw each.

Answer key and marking scheme

Question Expected response Marks
1. What is air? Mixture of gases. 1
2. Can we see air? No. 1
3. Can we feel air? Yes. 1
4. What do we breathe in? Oxygen. 1
5. Name one thing that needs air. People. 1
6. Why does a flag flap? Moving air. 1
7. Why is air invisible? It is clear. 1
8. Why do plants need air? To live. 1
9. Draw evidence of air. Three drawings. 1
10. Explain why air matters. Breathing. 1
Total 10

Independent practice answers. Level 1: 1 Mixture of gases.; 2 No.; 3 Yes.; 4 Oxygen.; 5 People.. Level 2: 1 Moving air.; 2 It is clear.; 3 To live.. Level 3: 1 Three drawings.; 2 Breathing.; 3 Balloon test..

Quiz answers: 1 B, 2 C, 3 A, 4 B, 5 C, 6 A, 7 B, 8 C, 9 A, 10 B, 11 C, 12 A, Challenge 1 B, Challenge 2 C.

Mastery and remediation

Objective Bronze (Developing) Silver (Proficient) Gold (Advanced)
O1 Say what air is Shows this with help from an adult or a picture Does this independently and explains how they know Explains it clearly and uses it in a new situation
O2 Give evidence that air is there Shows this with help from an adult or a picture Does this independently and explains how they know Explains it clearly and uses it in a new situation
O3 Name what uses air Shows this with help from an adult or a picture Does this independently and explains how they know Explains it clearly and uses it in a new situation
O4 Explain why air matters Shows this with help from an adult or a picture Does this independently and explains how they know Explains it clearly and uses it in a new situation

Courseversity badge thresholds (overall quiz score): Gold = 90–100%; Silver = 80–89.9%; Bronze = 70–79.9%. A badge is never a full record of progress.

If a learner struggles

  1. Find the misconception: “Air is nothing.” Air is matter.
  2. Explain another way: use real objects, pictures or actions first, then words.
  3. Show a simpler example: Explain three signs of air.
  4. Guided practice: work through one example together and let the learner try the next one.
  5. Reassess: use the quiz again or the worksheet.
  6. Move on when the learner shows Silver-level evidence independently.

For parents and guardians

In this lesson your child finds evidence of air. You do not need to be an expert to help.

  • Blow bubbles together.
  • Ask, “What is inside the bubble?”
  • Wave a card.
  • Ask “how do you know?” after each answer, and listen.
  • Praise effort, not only right answers. Mistakes are how we learn.
  • Ten to fifteen minutes a day is better than one long session.

Teacher package

1–5. Objectives, prerequisites, materials, preparation, duration

Lesson objectives. Learners will: say what air is; give evidence that air is there; name what uses air; explain why air matters.

Prerequisite knowledge. Grade 1 ideas: weather and the sky, water around us and keeping our environment clean.

Materials. Cards, balloons, a bowl of water, straws and tables. Low-resource options: use chalk or charcoal on a board or wall, drawings in the sand, and objects from the classroom instead of printed materials.

Preparation. Prepare balloons and bubbles. Prepare tables.

Suggested duration. 45–60 minutes. It can be split into two shorter sessions.

6–9. Teaching procedure, explanation notes, guided and independent activities

Introduction (5 min). Wave a card and ask, “What do you feel?”

Explanation (10 min). Teach air.

Guided activity (10 min). Learners test.

Independent activity (10 min). Learners record.

Assessment and reflection (5 min). Ask each learner to say one thing they learned and how they know it.

Key questions. How do you know air is there?

Teacher explanation notes. Start with real objects and safe, hands-on observation. Then talk about what was seen, then draw and write. Always say “how do you know?”. Keep to the safety notes, and use local, safe materials.

10–12. Differentiation, formative assessment, common misconceptions

Support. Use real objects and pictures, short sentences and a partner. Let learners point, show or draw instead of writing. Extension. Ask learners to find a new example at home and explain how they know.

Formative assessment. Listen to learners read and explain, ask “how do you know?”, and check the independent work.

Misconceptions. “Air is nothing.” Air is matter.

13–15. Assessment questions, answer keys, marking scheme

Use the quiz, the 8-mark exam practice and the worksheet on this page. All answers and marking guides are in the answer sections above. Re-check every answer before use.

16–19. Remediation, enrichment, homework, teacher reflection

Remediation. Explain three signs of air. Enrichment. Look for one new example near your home or school, draw it and explain it to someone. Homework. See above.

Teacher reflection. After teaching, record: which ideas learners understood; which misconceptions occurred; which activities worked; which learners need more practice; and what to improve next time.

Sources and standards

This lesson is based on the sources below, and no official endorsement is claimed. Reference starting points: Next Generation Science Standards, Cambridge Primary Science and the IB Primary Years Programme. Where a standard code is named, it points to the official framework.

Research used to shape this lesson. Courseversity Science curriculum, Grade 2 Unit 7, topic 1; Next Generation Science Standards, structure and properties of matter and Earth systems (2-ESS2 water on Earth); Cambridge Primary Science Stage 2, materials and Earth; IB Primary Years Programme, how the world works. These sources informed the lesson.

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