Double the Turkey, Double the Time?
This lesson challenges families to think like chefs and scientists, exploring how recipes change when scaled up or down for a Thanksgiving feast. Children will discover that not everything doubles just because the main ingredient does, learning about proportional and non-proportional relationships in a fun, hands-on way.
The lesson goal is learners will understand that scaling recipes isn't just about doubling everything; some things change proportionally while others don't. They will be able to predict how various cooking elements, like ingredients, pan size, and cooking time, are affected when adjusting a recipe, applying math to real-world cooking challenges.
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Learning Guide
Step-by-step guidance. No preparation required.
- 1
Introduction: The Turkey Mystery5 Min
- Ask your child: 'If the turkey is twice as big, does it take twice as long to cook? Why do you think that?'
- Move on when Student engages with the question and offers an initial prediction about turkey cooking time.
Photo by Monstera Production on Pexels - 2
Explore & Plan: Our Recipe Challenge8 Min
- Choose a family recipe (e.g., mashed potatoes, cranberry sauce, or even a turkey recipe) together.
- Ask: 'If you made twice as much, what ingredients would change? What about half as much?'
- Move on when Student has chosen a recipe and identified some ingredients they would change for different serving sizes.
- 3
Discussion: Proportional or Not?6 Min
- Explain 'proportional' (changes evenly, like doubling ingredients) and 'non-proportional' (doesn't change evenly).
- Look at a turkey roasting chart. Ask: 'Does a 20lb turkey take exactly twice as long as a 10lb turkey?'
- Move on when Student can identify examples of proportional and non-proportional changes in a recipe and observes the turkey chart data.
Photo by Monstera Production on Pexels - 4
Activity: The 'Does It Double?' Chart9 Min
- Use the 'Does it double?' worksheet or draw one. Fill in your recipe's ingredients, then calculate for x2 and 1/2.
- Use the turkey roasting chart to find cooking times for different turkey weights. Record how time changes.
- Consider pan size. Ask: 'If you double the turkey, do you double the pan dimensions, or just need a bigger one?'
- Move on when Student has completed their 'Does it double?' chart, showing scaled ingredients, and realistic cooking times/pan sizes based on the turkey chart.
Photo by Felicity Tai on Pexels - 5
Summary: Kitchen Discoveries2 Min
- Ask: 'What was the most surprising thing you learned today about cooking times or scaling recipes?'
- Move on when Student shares one key takeaway or a surprising fact they learned.
Photo by Los Muertos Crew on Pexels
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