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Lesson Planet
Regressively calculate the bottle usage. Using data about the amount of bottled water and soft drinks consumed an educational video shows pupils how to determine the equation of a linear regression line. After calculating regression lines with a calculator, the presenter uses the graphing function to figure out when the two lines intersect to determine the year that water and soft drink consumption is the same.
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CCSS:
Adaptable
Instructional Ideas
- Have learners follow along with the steps using their own graphing calculators
- Lead a discussion on interpreting a numerical solution within a real problem
Classroom Considerations
- Assumes the class knows how to solve a linear system algebraically
- This video is hosted on YouTube
Pros
- Shows each step in entering the data into the calculator
- Finishes the problem with a positive statement about reducing the amount of plastic bottles in a landfill
Cons
- None