Learning objectives
Knowledge
- To determine the transparency of different materials and link this to their uses.
Working scientifically
- To plan and draw a table of results.
Success criteria
Knowledge
- I can define
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National curriculum
Science
Properties and changes
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Cross-curricular links
British values
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Before the lesson
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Lesson plan
Recap and recall
Display the Presentation: Agree or disagree? and select a volunteer to read each of the statements. All metals and rocks are hard so we use them to build houses (false). Chalk is a type of rock and must be soft as it can be used to write with (true).
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Extended-mode explainer videos
How to extend your display to view the lesson page and preseantion mode simultaneously. Choose your operating system below to watch the video
Adaptive teaching
Pupils needing extra support
Could use the Activity: Transparency table template (support) to create a table for their results when testing the transparency of different materials; could be provided with the following ranges for lux to categorise their materials: opaque (decrease to 0 lux), translucent (decrease of more than 10 lux), transparent (decrease of 10 lux or less); could use the Knowledge organiser to help them define and sort transparent, translucent and opaque materials.
Pupils working at greater depth:
Should test additional materials they find in the classroom; should add an extra column to their results table with the heading ‘Observations’ and record how the clarity of an object viewed through the different materials varies (for example, the object was clear, fuzzy, coloured, distorted, not visible, etc.); should suggest potential uses for the materials tested based on their transparency; could choose an extension activity relating to transparency from the Resource: Stretch and challenge: Properties and changes.
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Assessing progress and understanding
Pupils with secure understanding indicated by: defining the term transparency;
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Knowledge outcomes
- I can define the term transparency as a measure of the amount of light that passes through a material.
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Vocabulary definitions
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light intensity
The amount or strength of light.
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light meter
A device used for measuring light intensity.
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