Learning objectives
Knowledge
- To recognise a link between the number of components and resistance.
Working scientifically
- To explain results using scientific knowledge.
Success criteria
Knowledge
- I can describe the relationship between the number
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National curriculum
Science
Electricity
Pupils should be taught to:
- Compare
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Cross-curricular links
English
Spoken language
Pupils should be taught
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Before the lesson
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Lesson plan
Recap and recall
Display the Presentation: Comparing circuits showing three series circuits with different numbers of bulbs. Ask the class to predict which circuit they think will have the brightest bulbs, drawing on their experience from Science, Year 4, Energy: Electricity and circuits, Lesson 5: Investigating bulb brightness.
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Extended-mode explainer videos
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Extended-mode explainer video: For Windows
Adaptive teaching
Pupils needing extra support
Should use the Activity: Investigating bulb brightness and resistance: support version that provides prompts for calculating the mean average and helps to write a conclusion; should watch the Pupil video: Bulb brightness and resistance before the lesson or during the practical to remind them of the method steps.
Pupils working at greater depth
Should suggest situations where the relationship between the number of components and the device output is useful (such as planning to make a toy, sign or electrical appliances like a torch); could use an ammeter in series to measure the current with different numbers of bulbs and observe patterns with the lux readings.
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Assessing progress and understanding
Pupils with secure understanding indicated by: describing the relationship between the number
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Knowledge outcomes
- I can describe that the more bulbs in a circuit, the dimmer they will be.
- I can describe that the more components/bulbs in an electrical circuit, the greater the amount of resistance.
- I can explain that increasing the number of bulbs/components in a circuit increases the resistance, which slows the flow of current/electrical charge; this reduces the energy transferred to the components.
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Vocabulary definitions
-
ammeter
A device that measures current (the flow of electrical charge).
-
anomaly
A result that does not fit the pattern.
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Maintained by: Kapow Primary team
Last update: 17th October, 2024
