Learning objectives
Knowledge
- To investigate what affects bulb brightness.
Working scientifically
- To pose questions and plan ways to test them.
Success criteria
Knowledge
- I can describe
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National curriculum
Science
Electricity
Pupils
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Cross-curricular links
Design and technology
Pupils
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Before the lesson
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Lesson plan
Recap and recall
Display the Presentation: Sorting materials and ask the children to decide how to sort the materials into different groups, giving justifications for their decisions. Encourage the children to apply their knowledge of electrical conductors and insulators from the last lesson.
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Extended-mode explainer videos
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Adaptive teaching
Pupils needing extra support
Could use the Activity: Investigating bulb brightness: support to provide prompts when writing the enquiry question and forming a conclusion; should watch the Pupil video: Investigating bulb brightness to reinforce the method and offer reminders throughout the experiment as it is set to play on a loop.
Pupils working at greater depth
Should make predictions about different numbers of bulbs in a series circuit and the subsequent bulb brightness (therefore extrapolating data); could use an ammeter within the series circuit to collect quantitative data to support the relationship described; could use a device to access the link: PHET Circuit Construction Kit to simulate the addition of an ammeter into the circuit to collect quantitative data to support the relationship described; could choose an extension activity relating to building circuits and bulb brightness from the Resource: Stretch and challenge: Electricity and circuits.
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Assessing progress and understanding
Pupils with secure understanding indicated by: describing that the more
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Knowledge outcomes
- I can describe that the more bulbs added to a series circuit, the dimmer the bulbs will be.
- I can explain that when more bulbs are added to a circuit, less energy is transferred to each bulb, causing them to be dimmer.
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Vocabulary definitions
-
ammeter
A device that measures the flow of charge around an electrical circuit.
-
brightness
How much light is given out.
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In this unit
Maintained by: Kapow Primary team
Last update: 9th January, 2025
