Where did all the variables go? Scholars learn how to interpret an equation when they eliminate all variables during the solving process. They interpret the solution as infinite solutions or no solutions. 

Concepts

solving equations, identity, inverse operations

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Additional Tags

math

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Instructional Ideas

• Post the video as a resource for absent pupils or those needing extra instruction
• Use a graphic organizer to record new vocabulary and examples

Classroom Considerations

• The video requires Internet access to view
• The sixth in a series of eight lessons dedicated to solving equations

Pros

• Good use of vocabulary throughout the video
• Includes a large set of practice problems with an answer key

Cons

• Lesson does not include problem solving or real-life examples

Common Core

8.EE.C.7.a