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Grade 6 Natural Sciences & Technology

Term 3 CAPS Framework: Energy and Change. A colourful study hub about electric circuits, conductors and insulators, solving problems with technology, and using mains electricity safely.

Grade 6Term 3NSTCAPS-aligned

Term 3 Topic Overview

In Term 3, learners explore electricity as a form of energy. They learn how simple circuits work, how materials can allow or stop electric current, how systems can solve real-life problems, and how to use electricity safely at home and school.

1. Electric Circuits 2. Circuit Components and Symbols 3. Electrical Conductors and Insulators 4. Switches and Control 5. Systems to Solve Problems 6. Mains Electricity and Safety 7. Practical Investigations 8. NST Skills for Term 3
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1. Electric Circuits

EnergyCurrentComplete pathBulb

An electric circuit is a pathway that allows electricity to flow. A simple circuit usually needs an energy source, connecting wires and an output device such as a bulb, buzzer or motor.

Key idea: A circuit must be complete before current can flow. If there is a break anywhere in the pathway, the circuit is open and the bulb or device will not work.

Closed circuit

  • The pathway is complete.
  • Current can flow around the circuit.
  • The output device can work.
  • Example: a bulb lights up.

Open circuit

  • The pathway is broken.
  • Current cannot flow all the way around.
  • The output device does not work.
  • Example: a switch is off.
Cell or batteryWiresSwitchBulb / buzzer / motor
Study question

Explain why a bulb does not light up when one wire is disconnected from a simple circuit.

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2. Circuit Components and Symbols

CellBatteryBulbDiagram

Electric circuits are often drawn using symbols. Symbols make diagrams neat, simple and easy to understand. Learners should recognise the parts of a circuit and explain what each part does.

Energy source

A cell or battery provides electrical energy to the circuit.

Conducting wires

Wires connect the components and allow current to move through the circuit.

Output device

A bulb, buzzer or motor changes electrical energy into light, sound or movement.

Example: In a torch, the cells provide energy, the switch controls the circuit, and the bulb produces light.
Learning task: Draw a simple circuit with one cell, one switch and one bulb. Label each part and explain its function.
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3. Electrical Conductors and Insulators

MaterialsMetalPlasticSafety

Materials behave differently in electric circuits. Some materials allow electric current to flow through them easily. Other materials do not allow current to flow easily.

Conductors

Conductors allow electricity to flow through them. Most metals are good conductors.

  • Copper
  • Aluminium
  • Iron
  • Steel

Insulators

Insulators do not allow electricity to flow through them easily. They help protect people from electric shock.

  • Plastic
  • Rubber
  • Wood
  • Glass
Safety link: Electrical wires often have metal inside and plastic around the outside. The metal conducts electricity, while the plastic insulates and protects users.
Investigation idea

Test different classroom materials in a simple circuit to see whether they are conductors or insulators. Record the results in a table.

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4. Switches and Control in Circuits

ControlOpenClosedDesign

A switch is a device that opens or closes a circuit. It controls whether current can flow. Switches are used in many everyday devices, including torches, lights, fans, kettles and doorbells.

Key idea: When a switch is closed, the circuit is complete. When a switch is open, the circuit is broken.
  • A switch makes electrical devices easier and safer to control.
  • A simple switch can be made with metal parts that touch or separate.
  • Switches are useful in technology projects because they allow users to control outputs.
Design task: Design a simple switch using cardboard, foil, paper clips or split pins. Explain how it opens and closes a circuit.
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5. Systems to Solve Problems

TechnologyInputProcessOutput

Technology uses systems to solve problems. A system has parts that work together. In electrical systems, energy moves through the circuit to produce an output such as light, sound or movement.

Input → Process → Output

Example: Electric torch

  • Input: electrical energy from cells
  • Process: current flows through the circuit when the switch is on
  • Output: light from the bulb

Example: Alarm or buzzer

  • Input: electrical energy from a battery
  • Process: circuit closes when triggered
  • Output: sound from the buzzer
Technology process: Learners can identify a need, design a solution, make a model, test it, evaluate it and improve it.
Project idea

Build a simple device that uses an electric circuit to solve a problem, such as a torch, model lighthouse, warning buzzer or quiz-board game.

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6. Mains Electricity and Safety

HomesPower stationsAppliancesSafety rules

Mains electricity is the electricity supplied to homes, schools and businesses through power lines and plug points. It is very useful, but it can be dangerous if used carelessly.

Important: Learners should never experiment with plug points, electrical appliances or mains electricity. Practical investigations must only use safe cells or batteries under adult supervision.

Uses of mains electricity

  • Lighting rooms
  • Cooking and heating
  • Charging devices
  • Running fridges, televisions and computers
  • Powering school and home appliances

Safety rules

  • Do not touch plugs with wet hands.
  • Do not overload plug points.
  • Do not use damaged cords.
  • Keep liquids away from electrical devices.
  • Ask an adult for help when there is a problem.
Study question

Give three safety rules for using electricity at home and explain why each rule is important.

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7. Practical Investigations

ObservePredictRecordConclude

Natural Sciences and Technology includes hands-on learning. Learners should test ideas carefully, record results clearly and explain what the results show.

Investigation 1

Build a simple circuit and identify the role of each component.

Investigation 2

Test materials to classify them as conductors or insulators.

Investigation 3

Design and improve a device that uses a switch and an output device.

Scientific method: Ask a question → Predict → Test fairly → Record observations → Draw a conclusion → Suggest improvements.
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8. NST Skills for Term 3

VocabularyDiagramsDesignExplain

Learners must not only remember facts. They must also use scientific and technological thinking to explain, compare, test and design.

Science skills

  • Identify components in circuits
  • Draw and label simple circuit diagrams
  • Compare conductors and insulators
  • Make observations and record results
  • Use evidence to explain conclusions

Technology skills

  • Identify a problem or need
  • Plan a solution
  • Make a working model
  • Test and evaluate the model
  • Improve the design
Key vocabulary: circuit, current, cell, battery, conductor, insulator, switch, component, output, system, mains electricity, appliance, safety.

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