Pupils who are secure will be able to:

• Describe how chairs are made for different users and purposes.
• Explain how design briefs and design criteria help when making a new product.
• Name some shapes that are stronger than others.
• Describe how making a material thicker makes it more stiff.
• Understand and use the vocabulary of strong, weak, stiff and flexible.
• Make a stable chair structure for a particular user.
• Select suitable materials and join them securely.
• Evaluate a product against the design criteria.
• Improve parts of a product based on the design criteria.