Get your heart pumping! A linear equation can compute the target heart rate of an individual based on their age. A thorough lesson demonstrates how to use an equation to calculate the age of an individual given a target heart rate. The application question provides the equation and demonstrates each step of the calculation.

Concepts

linear equations, linear equations applications, linear equations writing, substitution

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Additional Tags

math

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Instructional Ideas

• Have pupils calculate their own target heart rates; compare them to their heart rate after 20 jumping jacks
• Ask learners to follow the same structure with each of their application problems

Classroom Considerations

• Expects experience with substitution and solving an equation

• This video is hosted on YouTube

Pros

• Reinforces checking a solution and writing a complete sentence as an answer
• Connects linear equations to a real-life application

Cons

• None

Common Core

SL.8.2 SL.9-10.2 HSA-CED.A.1 RST.6-8.8 RST.9-10.8