Learning objective

  • To explore how thickness affects the strength of materials.

Success criteria

  • I can use the words stiff and flexible
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National curriculum

Design and technology

Make

Pupils

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Before the lesson

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Lesson plan

Recap and recall

Explain that the children will be thinking about strong shapes. Display the Presentation: Agree or disagree? and read out the statement aloud. Ask the children to discuss the statement with a partner and decide whether they agree or disagree. Remind them that they need to explain why they agree or disagree.

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Adaptive teaching

Pupils needing support:

Should use the Knowledge organiser to support using the correct vocabulary when describing their observations during the Main event and Wrapping up; could use a ruler to help fold materials by bending them around the ruler and pressing down.

Pupils working at greater depth:

Should explain why both stiff and flexible materials are useful when making a product, such as a chair; could suggest alternative materials to test and predict how their thickness might affect stiffness.

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Assessing progress and understanding

Pupils with secure understanding indicated by: explaining why different products or parts

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Vocabulary definitions

  • flexible

    Can bend without breaking.

  • material

    What something is made of.

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