You will learn
- Name the parts of a wheel and axle.
- Explain why wheels help.
- Find wheels and axles in everyday objects.
- Build a simple wheel and axle.
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
- A wheel turns on an axle.
- Rolling has less friction than sliding.
- Wheels make carrying loads easier.
- Wheels and axles are simple machines.
Words to know
a round object that turns
the rod the wheel turns on
to move by turning
a tool that makes work easier
1. Discover: The wheelbarrow
Adjoa helps her uncle carry sand in a wheelbarrow. The load is heavy, but the wheel rolls easily. “Without a wheel I would drag the sand,” says Uncle. “The wheel makes it much easier.”
Think: Why does the wheel help?
2. Understand: Wheels and axles
Idea 1: Wheel and axle
A wheel is a round object that turns around a rod called an axle. Together they are a simple machine.
Idea 2: Rolling is easier
Rolling has less friction than sliding. A wheel lets us roll heavy loads instead of dragging them.
Idea 3: Everyday wheels
Cars, bicycles, carts, trolleys and door knobs use wheels and axles. Even a pencil sharpener handle is a wheel and axle.
3. Worked examples
Example 1 (I show you): Name parts
A cart wheel.
- Round part: wheel.
- Rod: axle.
- Together: machine.
Answer: A wheel turns on an axle.
Example 2 (We do it together): Why wheels?
Carrying a load.
- Sliding: much friction.
- Rolling: less.
- Wheels help.
Answer: Wheels reduce friction.
Example 3 (You try): Find
Things with wheels.
Show the steps and answer
- Bicycle.
- Cart.
- Door knob.
Answer: Wheels are everywhere.
Did you know?
The oldest known wheel in the world, found in Slovenia, is more than 5,000 years old.
Why this matters
Wheels let us carry loads, travel and build machines.
4. Explore: Make a wheel and axle
Make a simple wheel and axle with card and straw.
- Cut two card circles with an adult.
- Push a pencil through the centres.
- Fix to a box.
- Roll the box.
Think about it: what did you notice?
What did you notice? Rolling was easier than dragging.
5. Practise
Say it in a sentence
Use these starters when you talk about the lesson. Say them out loud.
- A wheel turns on an ___.
- Rolling has less ___ than sliding.
- Wheelbarrows use a ___.
- A wheel and axle is a ___ machine.
Guided practice
Question 1. What turns on an axle?
A wheel.
Question 2. What is an axle?
A rod.
Question 3. Name something with wheels.
Bicycle.
Independent practice
Level 1: Start
- What turns on an axle?
- What is an axle?
- Name something with wheels.
- What is a simple machine?
- Is rolling easier than sliding?
Level 2: Grow
- Why wheels on carts?
- What if there was no axle?
- Find three wheels at home.
Level 3: Stretch
- Draw a wheel and axle.
- Explain why wheels help.
- Build and test a cart.
Answers are in the answer key below. Try first, then check.
6. Apply: Science in everyday life
Which wheels do you use daily?
Show a sample answer
Bicycle and cart.
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: They make moving easier.
Fix: Knobs and handles do.
8. Lesson summary and revision card
- I can name the parts of a wheel and axle.
- I can explain why wheels help.
- I can find wheels and axles in everyday objects.
- I can build a simple wheel and axle.
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
- A wheel turns on an axle.
- Rolling has less friction than sliding.
- Wheels make carrying loads easier.
- Wheels and axles are simple machines.
11. Next lesson
Next lesson: Levers. 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.
- Name the parts. [2 marks]
- Why do wheels help? [2 marks]
- Name three examples. [3 marks]
- Describe how to build one. [2 marks]
- Safety rule? [1 mark]
Total: 10 marks.
Marking guide and model answers
- Wheel [1]; axle [1]
- Less friction [1]; rolling [1]
- Any three [1 each]
- Card wheels [1]; axle [1]
- Adult cuts card [1]
Score guide: 9 to 10 = secure. 6 to 8 = nearly there, revise the parts you missed. Under 6 = work through the lesson again with a grown-up.
Printable worksheet
- What turns on an axle?
- What is an axle?
- Name something with wheels.
- What is a simple machine?
- Is rolling easier than sliding?
- Why wheels on carts?
- What if there was no axle?
- Find three wheels at home.
- Draw a wheel and axle.
- Explain why wheels help.
Homework
List five things with wheels at home. Draw one wheel and axle.
Answer key and marking scheme
| Question | Expected response | Marks |
|---|---|---|
| 1. What turns on an axle? | A wheel. | 1 |
| 2. What is an axle? | A rod. | 1 |
| 3. Name something with wheels. | Bicycle. | 1 |
| 4. What is a simple machine? | A tool that eases work. | 1 |
| 5. Is rolling easier than sliding? | Yes. | 1 |
| 6. Why wheels on carts? | Less friction. | 1 |
| 7. What if there was no axle? | Wheel cannot turn. | 1 |
| 8. Find three wheels at home. | Door knob, cart, toy. | 1 |
| 9. Draw a wheel and axle. | Labelled drawing. | 1 |
| 10. Explain why wheels help. | Rolling vs sliding. | 1 |
| Total | 10 |
Independent practice answers. Level 1: 1 A wheel.; 2 A rod.; 3 Bicycle.; 4 A tool that eases work.; 5 Yes.. Level 2: 1 Less friction.; 2 Wheel cannot turn.; 3 Door knob, cart, toy.. Level 3: 1 Labelled drawing.; 2 Rolling vs sliding.; 3 Record..
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 Name the parts of a wheel and axle | 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 Explain why wheels help | 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 Find wheels and axles in everyday objects | 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 Build a simple wheel and axle | 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: “Wheels make loads weigh less.” They make moving easier.
- Explain another way: use real objects, pictures or actions first, then words.
- Show a simpler example: Name parts and explain why wheels help.
- 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 learns how wheels and axles work. You do not need to be an expert to help.
- Find wheels at home.
- Ask, “What is the axle?”
- Roll a toy.
- 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: name the parts of a wheel and axle; explain why wheels help; find wheels and axles in everyday objects; build a simple wheel and axle.
Prerequisite knowledge. Grade 1 ideas: pushing and pulling, things that move and making things move faster or slower.
Materials. Card circles, straws, pencils, boxes and tape. 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. Pre-cut card wheels. Prepare tape and boxes.
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 cart and ask, “What makes it roll?”
Explanation (10 min). Teach wheel and axle.
Guided activity (10 min). Learners build carts.
Independent activity (10 min). Learners test.
Assessment and reflection (5 min). Ask each learner to say one thing they learned and how they know it.
Key questions. Where is the wheel? Where is the axle?
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. “Wheels make loads weigh less.” They make moving easier.
13–15. Assessment questions, answer keys, marking scheme
Use the quiz, the 10-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. Name parts and explain why wheels help. 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 6, topic 7; Next Generation Science Standards, motion and stability: forces and interactions (K-2-ETS and 3-PS2 foundations); Cambridge Primary Science Stage 2, forces and movement; IB Primary Years Programme, how the world works. These sources informed the lesson.