Quadratic Formula

When all else fails, use the quadratic formula! A video lesson introduces the quadratic formula to scholars and then demonstrates two problems. One problem results in integer solutions, the other in irrational solutions.

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CCSS: Adaptable
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Instructional Ideas
  • Have pupils sing the Quadratic Formula Song to a familiar melody
  • Use problems from the practice as whiteboard practice
Classroom Considerations
  • Assumes students know how to substitute values into a formula
  • This resource is only available on an unencrypted HTTP website. It should be fine for general use, but don’t use it to share any personally identifiable information
  • Emphasizes the connection between using the quadratic formula and other methods of solving
  • Uses mathematical vocabulary throughout the lesson
  • None