What this lesson teaches
Ratio and proportion.
Math in Action
Ratio Recipe Scaling
Scale a recipe up and down using ratios!
Duration30 min
Age GroupAges 11–14
DifficultyIntermediate
SubjectMath
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How the activity runs
The learning connection
Applying ratio to a personally relevant context (cooking for family) creates authentic problem-solving that activates both procedural and conceptual knowledge simultaneously. Students who solve ratio problems in real contexts are more likely to recognise ratio relationships in novel situations.
Try it with your learner
1. Read recipe for 4 people. 2. Scale for 8. 3. Scale for 2. 4. Check ratios.