Learning objectives
- To determine the hardness of materials and link this to their uses.
- Working scientifically: To evaluate the hardness test to determine the degree of trust in the results.
Success criteria
- I can define
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National curriculum
Science
Properties and changes of materials
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Cross-curricular links
British values
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Before the lesson
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Lesson plan
1: Lesson plan
An area for you to put useful resources from the previous lesson
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Adaptive teaching
Pupils needing extra support
Could use the activity Resource: Hardness test variables (support) which provides a list of variables to choose from when evaluating their scratch test.
Pupils working at greater depth
Could test additional materials that produce ambiguous results, such as soft materials like foam, sponge and cotton wool (as these materials deform easily, they will move away from the nail as it scratches, so they may not scratch despite being soft); could be encouraged to discuss why these soft materials do not scratch easily.
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Assessing progress and understanding
Pupils with secure understanding indicated by: defining the term ‘hardness’;
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Vocabulary definitions
-
hard
A material that is not easily scratched or dented.
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hardness
A measure of how easily dented or scratched a material is.
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Maintained by: Kapow Primary team
Last update: 2nd October, 2023
