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Experiments: Further Introductory
To complete the Key Stage 3 range of activities you will need the following Locktronics equipment (all prices are in pounds sterling and are exclusive of VAT):
| Description | Quantity | Product No |  |
| Baseboard LK50 | 1 | 410-3000 |
| Lead Set LKLS | 1 | 410-8022 |
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| Component carriers: |
| Fuse carrier/universal component carrier | 1 | 410-7936 |
| Solenoid | 1 | 410-6838 |
| Relay 6V changeover | 1 | 410-7889 |
| Reed switch | 1 | 410-5404 |
| Variable resistor 25 ohm | 1 | 410-5212 |
| Buzzer | 1 | 410-6423 |
| Lamp holder | 3 | 410-5291 |
| Lamps | 3 | 410-2347 |
| Connecting link | 4 | 410-5250 |
| Motor | 1 | 410-4102 |
| Switch press | 1 | 410-6207 |
| LED red | 1 | 410-6420 |
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| Other equipment: |
| Cells | 3 |
| Voltmeter | 1 |
| Ammeter | 1 |
Conductors and Insulators
- Students discuss the difference between conductors and insulators.
- They then assemble a circuit to test sample materials by bridging a gap
Measuring Voltage
- Students measure the voltage across a number of cells as an introduction to voltmeters.
- They then measure voltages across bulbs in circuits.
- Students are asked to discuss series and parallel voltages.
Measuring Current
- Students consider current as flow of electricity.
- Series and parallel circuits are reviewed.
- Students learn how to put an ammeter into a circuit.
- They then measure the current in series and parallel circuits and discuss the rules,
Series and Parallel Circuits
- Students review the basics (they have already have covered).
- Students measure current and voltage in series and parallel circuits and complete a summary rules table.
Energy Transfers
- Students recap energy types and transfer diagrams.
- They then build circuits with transducers, and draw energy transfer diagrams for them.
Magnets in Circuits
- Explores the links between magnetism and electricity
- The reed switch and relay are introduced as two magnetic switches.
- The motor and solenoid are then experimented with as electromagnetic devices.
Resistance
- This activity introduces resistance.
- Students start by observing that it is difficult for current to flow through more bulbs.
- Then a variable resistor (rheostat) is used to change a bulb's brightness.
- Finally the concept of "short circuits" is discussed.
Linking Voltage and Current
- Students have previously measured voltage and current separately.
- They now measure both in the same circuit and examine proportionality.
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| Locktronics kits and components are manufactured and distributed by TecQuipment Ltd |  |
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