You will learn
- Say that air takes up space.
- Do the upturned cup test.
- Explain a balloon filling.
- Record observations.
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
- Air takes up space.
- A balloon fills with air.
- A cup upside down keeps water out.
- Air can be trapped.
Words to know
to take up space
to fill with air
held in a space
the room that something takes up
1. Discover: The upside-down cup
Amelia pushes an upside-down cup straight down into a bowl of water. The paper tissue inside the cup stays dry. “Why did the water not fill the cup?” she asks. “Because air is already there,” says her teacher.
Think: What kept the water out?
2. Understand: Air takes up space
Idea 1: The cup test
When you push an upside-down cup into water, trapped air stops the water from filling it. The air occupies the space inside.
Idea 2: Balloons
A balloon inflates when air goes inside. It gets bigger because air takes up space.
Idea 3: More evidence
A football, bike tyre and bubble all show air taking up space. If we let the air out, they go flat.
3. Worked examples
Example 1 (I show you): Why dry?
Tissue in an upside-down cup.
- Air inside.
- Water cannot enter.
- Tissue dry.
Answer: Trapped air keeps the tissue dry.
Example 2 (We do it together): Balloon
Blow it up.
- Air goes in.
- Takes space.
- Bigger.
Answer: Air inflates the balloon.
Example 3 (You try): Flat tyre
A tyre loses air.
Show the steps and answer
- Less air.
- Less space.
- Flat.
Answer: Less air makes it flat.
Did you know?
Divers use air tanks because air takes up space and can be stored under pressure.
Why this matters
Knowing that air takes up space explains how balloons, tyres and boats work.
4. Explore: Upside-down cup
Push a cup into water and see the dry tissue.
- Crumple a tissue and stuff it in a cup.
- Turn upside down.
- Push straight down in a bowl.
- Lift out and check the tissue.
Think about it: what did you notice?
What did you notice? The tissue stayed dry.
5. Practise
Say it in a sentence
Use these starters when you talk about the lesson. Say them out loud.
- Air takes up ___.
- A balloon ___ with air.
- Trapped air keeps ___ out.
- A flat tyre has less ___.
Guided practice
Question 1. Does air take space?
Yes.
Question 2. What fills a balloon?
Air.
Question 3. What stayed dry?
The tissue.
Independent practice
Level 1: Start
- Does air take space?
- What fills a balloon?
- What stayed dry?
- What kept water out?
- What makes a tyre flat?
Level 2: Grow
- Why does the balloon grow?
- Why tilt the cup to see bubbles?
- What if we poke a hole?
Level 3: Stretch
- Draw the cup test.
- Explain the result.
- Predict a tilted cup.
Answers are in the answer key below. Try first, then check.
6. Apply: Science in everyday life
Where do you see air in objects?
Show a sample answer
Balls and tyres.
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
Fix: It is full of air.
Fix: It has mass.
8. Lesson summary and revision card
- I can say that air takes up space.
- I can do the upturned cup test.
- I can explain a balloon filling.
- I can record observations.
9. Check and master
Answer all 14 questions. You will see feedback after each one.
Your result appears here after you answer every question.
10. Key takeaways
- Air takes up space.
- A balloon fills with air.
- A cup upside down keeps water out.
- Air can be trapped.
11. Next lesson
Next lesson: Moving air. 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.
- Does air take space? How do you know? [2 marks]
- Explain the cup test. [3 marks]
- Why does a balloon inflate? [2 marks]
- Why is a tyre flat? [1 mark]
- Safety rule? [1 mark]
Total: 9 marks.
Marking guide and model answers
- Yes [1]; evidence [1]
- Cup upside down [1]; trapped air [1]; tissue dry [1]
- Air in [1]; takes space [1]
- Less air [1]
- Plastic cup or wipe spills [1]
Score guide: 8 to 9 = secure. 6 to 7 = nearly there, revise the parts you missed. Under 6 = work through the lesson again with a grown-up.
Printable worksheet
- Does air take space?
- What fills a balloon?
- What stayed dry?
- What kept water out?
- What makes a tyre flat?
- Why does the balloon grow?
- Why tilt the cup to see bubbles?
- What if we poke a hole?
- Draw the cup test.
- Explain the result.
Homework
Do the upside-down cup test at home with an adult. Draw what you see.
Answer key and marking scheme
| Question | Expected response | Marks |
|---|---|---|
| 1. Does air take space? | Yes. | 1 |
| 2. What fills a balloon? | Air. | 1 |
| 3. What stayed dry? | The tissue. | 1 |
| 4. What kept water out? | Air. | 1 |
| 5. What makes a tyre flat? | Less air. | 1 |
| 6. Why does the balloon grow? | Air takes space. | 1 |
| 7. Why tilt the cup to see bubbles? | Air escapes. | 1 |
| 8. What if we poke a hole? | Air escapes. | 1 |
| 9. Draw the cup test. | Labelled drawing. | 1 |
| 10. Explain the result. | Trapped air. | 1 |
| Total | 10 |
Independent practice answers. Level 1: 1 Yes.; 2 Air.; 3 The tissue.; 4 Air.; 5 Less air.. Level 2: 1 Air takes space.; 2 Air escapes.; 3 Air escapes.. Level 3: 1 Labelled drawing.; 2 Trapped air.; 3 Bubbles rise..
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 that air takes up space | 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 Do the upturned cup test | 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 Explain a balloon filling | 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 Record observations | 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
- Find the misconception: “The cup is empty.” It is full of air.
- Explain another way: use real objects, pictures or actions first, then words.
- Show a simpler example: Explain two tests that show air takes up space.
- Guided practice: work through one example together and let the learner try the next one.
- Reassess: use the quiz again or the worksheet.
- Move on when the learner shows Silver-level evidence independently.
For parents and guardians
In this lesson your child shows that air takes up space. You do not need to be an expert to help.
- Do the cup test together.
- Ask, “Why is it dry?”
- Blow up a balloon.
- 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 that air takes up space; do the upturned cup test; explain a balloon filling; record observations.
Prerequisite knowledge. Grade 1 ideas: weather and the sky, water around us and keeping our environment clean.
Materials. Plastic cups, bowl of water, tissues, balloons 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 bowls and cups. Cover tables. Have towels ready.
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). Show a balloon and ask, “What is inside?”
Explanation (10 min). Teach air takes space.
Guided activity (10 min). Learners do the cup 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. What stopped the water? Where is the air?
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. “The cup is empty.” It is full of air.
13–15. Assessment questions, answer keys, marking scheme
Use the quiz, the 9-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 two tests that show air takes up space. 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 2; 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.