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
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

  • Emphasizes the connection between using the quadratic formula and other methods of solving
  • Uses mathematical vocabulary throughout the lesson

  • None