You will learn
- Name circuit components.
- Connect a simple circuit.
- Draw a circuit diagram.
- Predict whether a lamp lights.
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 circuit needs a complete loop.
- Components include cell, lamp, wires and switch.
- Symbols make diagrams quick.
- A gap stops the current.
Words to know
a complete path for electricity
a part of a circuit
a simple sign that stands for a component
a connection point on a cell or lamp
1. Discover: The torch circuit
Naa takes a torch apart (with an adult) and finds a battery, a metal strip, a switch and a lamp. “The parts make a loop,” she says. When the switch is off, the loop is broken. When it is on, the lamp lights.
Think: Why must the circuit be a complete loop?
2. Understand: Circuits
Idea 1: Components
A circuit has components: a cell or battery (the energy source), a lamp (the output), wires (the path) and a switch (to control it).
Idea 2: Connecting
Attach one wire from each terminal of the cell to the lamp. The loop must be complete with no gaps.
Idea 3: Symbols
We draw circuits with symbols: a long and short line for a cell, a circle with a cross for a lamp, straight lines for wire and a gap for a switch.
3. Worked examples
Example 1 (I show you): Name
Energy source.
- Cell.
- Battery.
- Provides energy.
Answer: The cell is the energy source.
Example 2 (We do it together): Predict
Cell, lamp, wire gap.
- Gap.
- Not complete.
- No light.
Answer: The lamp stays off.
Example 3 (You try): Draw
Cell and lamp.
Show the steps and answer
- Cell symbol.
- Lamp symbol.
- Wires.
Answer: Draw a closed loop with both symbols.
Did you know?
A small torch lamp with a fresh battery can light for many hours, but it stops working immediately if the loop breaks.
Why this matters
Circuits are the building blocks of every electrical device.
4. Explore: Make a lamp light
Connect a cell, wires and a lamp holder to light a lamp.
- Place the lamp in its holder.
- Connect two wires to the cell.
- Connect them to the lamp holder.
- Draw your circuit.
Think about it: what did you notice?
What did you notice? The lamp lit only when the loop was complete.
5. Practise
Say it in a sentence
Use these starters when you talk about the lesson. Say them out loud.
- A ___ is a complete path.
- A ___ is a part of a circuit.
- A ___ stands for a component.
- A ___ is a connection point.
Guided practice
Question 1. What is a circuit?
Complete loop.
Question 2. Name a component.
Lamp.
Question 3. What does a cell do?
Provides energy.
Independent practice
Level 1: Start
- What is a circuit?
- Name a component.
- What does a cell do?
- What does a switch do?
- What stops current?
Level 2: Grow
- Why a loop?
- Why symbols?
- Why low voltage?
Level 3: Stretch
- Build a circuit.
- Predict lamp.
- Draw symbols.
Answers are in the answer key below. Try first, then check.
6. Apply: Science in everyday life
Draw a circuit with a cell, lamp and switch.
Show a sample answer
Use symbols.
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: Need a complete loop.
Fix: They change its energy.
8. Lesson summary and revision card
- I can name circuit components.
- I can connect a simple circuit.
- I can draw a circuit diagram.
- I can predict whether a lamp lights.
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 circuit needs a complete loop.
- Components include cell, lamp, wires and switch.
- Symbols make diagrams quick.
- A gap stops the current.
11. Next lesson
Next lesson: Cells and batteries. 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 four components. [4 marks]
- Describe how to connect a lamp to a cell. [3 marks]
- Draw a circuit with symbols. [2 marks]
- Safety rule? [1 mark]
Total: 10 marks.
Marking guide and model answers
- 1 each
- Wire from terminal [1]; to lamp [1]; complete loop [1]
- Components [1]; closed loop [1]
- Any [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 is a circuit?
- Name a component.
- What does a cell do?
- What does a switch do?
- What stops current?
- Why a loop?
- Why symbols?
- Why low voltage?
- Build a circuit.
- Predict lamp.
Homework
Draw three circuits with a lamp and say if each would light.
Answer key and marking scheme
| Question | Expected response | Marks |
|---|---|---|
| 1. What is a circuit? | Complete loop. | 1 |
| 2. Name a component. | Lamp. | 1 |
| 3. What does a cell do? | Provides energy. | 1 |
| 4. What does a switch do? | Controls. | 1 |
| 5. What stops current? | A gap. | 1 |
| 6. Why a loop? | Current flows around. | 1 |
| 7. Why symbols? | Quick diagrams. | 1 |
| 8. Why low voltage? | Safe. | 1 |
| 9. Build a circuit. | Diagram. | 1 |
| 10. Predict lamp. | Table. | 1 |
| Total | 10 |
Independent practice answers. Level 1: 1 Complete loop.; 2 Lamp.; 3 Provides energy.; 4 Controls.; 5 A gap.. Level 2: 1 Current flows around.; 2 Quick diagrams.; 3 Safe.. Level 3: 1 Diagram.; 2 Table.; 3 Diagram..
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 circuit components | 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 Connect a simple circuit | 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 Draw a circuit diagram | 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 Predict whether a lamp lights | 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: “One wire is enough.” Need a complete loop.
- Explain another way: use real objects, pictures or actions first, then words.
- Show a simpler example: Build and draw circuits.
- 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 builds simple circuits with a small cell. You do not need to be an expert to help.
- Look at a torch.
- Ask “Where is the loop?”
- Use only small cells.
- 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 circuit components; connect a simple circuit; draw a circuit diagram; predict whether a lamp lights.
Prerequisite knowledge. Grade 3 physical ideas: forces, magnets, materials and measuring in fair tests.
Materials. Pencil, paper. 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. Print symbol sheets.
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 lit lamp and ask, “Why does it work?”
Explanation (10 min). Teach circuits.
Guided activity (10 min). Learners build.
Independent activity (10 min). Learners draw.
Assessment and reflection (5 min). Ask each learner to say one thing they learned and how they know it.
Key questions. Is the loop complete?
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. “One wire is enough.” Need a complete loop.
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. Build and draw circuits. 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 4 Unit 6, topic 3; Next Generation Science Standards, energy; Cambridge Primary Science Stage 4, physics: electricity; IB Primary Years Programme, how the world works. These sources informed the lesson.