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Open resourceScaling a recipe
Learners scale a fictional recipe from six to fifteen portions. An arithmetic exercise – not a food preparation instruction.
Teaching example from Prios · Draft
NumeracyReadingDigital skills
Workplace situation
A fictional recipe for six portions must be scaled to fifteen portions.
Learning objectives
- Understand ratios.
- Use simple multiplication.
- Convert quantities.
- Check results.
Suggested activities
- Read a fictional ingredient list with four quantities.
- Find the conversion factor from 6 to 15 portions.
- Calculate the new quantities.
- Check with a calculator.
- Explain the calculation method.
Reflection questions
- What can make a calculation difficult even when we have a calculator?