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Many restaurants are required to post nutritional information for their foods, including the number of calories. But what does “550 calories” really mean? Instead of calories, what if McDonald’s rewrote its menu in terms of exercise?

In this lesson, students will use unit rates and proportional reasoning to determine how long different professional athletes would have to exercise to burn off different McDonald’s menu items. For instance, a 160-pound person would have to run for 50 minutes to burn off a Big Mac. So…want fries with that?!

Students will

  • Use rate and ratio reasoning to determine individual burn rates for various exercises
  • (Optional) Write and solve on-step equations to determine how much exercise would be needed to burn of different food items.

Before you begin

Students should understand what a unit rate is; if they have experience calculating and using unit rates to solve problems, even better.

Common Core Standards

Content Standards
Mathematical Practices