Learning Intentions (Objectives)
Use completing the square to derive the quadratic formula.
Rationale (Diagnostic Results)
You have probably used the quadratic formula many times without any connection to the standard formula. In case you forget what the quadratic formula is you will be able to derive it after this activity.
Standards Addressed in the Lesson
- Explore (Completing the Square)
- Try This! (Deriving the Quadratic Formula)
- Watch (Steps to Derive the Quadratic Formula)
- Making Connections (Justifying the Steps)
- Watch (Justifying the Steps)