Pupils design a sports bag, and show all the measurements they will need to make. They also plan how they will waste the least material.
Suitability National Curriculum levels 5 to 6
Time 20 to 40 minutes
Resources Ruler, pencil, calculator and paper
Key Processes involved
- Simplify the problem by identifying the pieces from which the bag is constructed and sketching them; choose appropriate methods to calculate missing dimensions
- Make connections between dimensions, for example: recognise that the material for the body of the bag needs to be the same length as its circumference; vary the positions of the pieces to determine the best way of using the cloth to minimise waste
- Interpreting and evaluating
- Consider assumptions and interpret the constraints in making the bag, for example: take note of the additional material needed for a seam
- Communicating and reflecting
- Describe their method and solution effectively and accurately, using words and sketches
Check that pupils understand the context, for example, you could show a real example of this type of sports bag to help pupils visualise it and ask questions such as:
- Do you know what seams are? What instructions have been given about seams?
- The components of the bag are to be cut out of material 1 metre wide.
- What are you trying to do with the layout of the components of the bag?
Pupils can tackle this task in different ways, but they might be expected to:
- convert one metric unit to another
- recognise and use common 2D representations of 3D objects
- understand and use appropriate formulae for finding circumferences of circle