Show how variables with subscripts are equivalent to those without through a video that shows an example of a linear system with subscripted variables. The instructor uses elimination to solve the system.

Concepts

systems of equations, systems of linear equations, elimination method

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Additional Tags

math

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Instructional Ideas

• Use as an extension for quick finishers
• Create a set of practice problems that resemble the video example

Classroom Considerations

• Assumes proficiency with the elimination method of solving systems

• This video is hosted on YouTube

Pros

• Instructor explains how subscripted variables could be replaced with simple variables

Cons

• Does not include context or assign meaning to the variables

Common Core

8.EE.C.8.a