Linear Systems in Three Variables

Put all that algebra learning to use! Using algebraic strategies, learners solve three-variable systems. They then use the three-variable systems to write a quadratic equation given three points on the parabola.

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CCSS: Designed
Instructional Ideas

  • Have pupils use mini white boards to allow for quick fixes of mistakes
  • Spend time reviewing methods of solving two variable systems
Classroom Considerations

  • Expects an understanding of elimination and substitution method
  • Lesson is the 31st in a 42-part series
Pros

  • Uses pupils' background knowledge to extend to solving three-variable systems
  • Includes ideas for scaffolding the lesson if necessary
Cons

  • None
Common Core