Solving Quadratics by Graphing

Lesson Prep

Lesson Details

• Duration: 50 minutes

• Learning Goal: Develop procedural fluency with solving quadratics by graphing.

Prework

• Watch the following videos to learn more about our retake policy and how we go over quizzes

  • Retake Policy

  • Going Over Quizzes

Answer Keys

• Link to Answer Keys

Classwork

• Estimation 180 – Day 179 (Andrew Stadel)

• Warm Up / Exploration (New Visions)

• Go over Concept Quiz

  • Students complete this analysis handout in order to prepare for a retake.

Standards

Common Core

• HSA.REI.B.4.B – Solve quadratic equations by inspection (e.g., for x² = 49), taking square roots, completing the square, the quadratic formula and factoring, as appropriate to the initial form of the equation. Recognize when the quadratic formula gives complex solutions and write them as a ± bi for real numbers a and b.

TEKS

• A.8(A) – solve quadratic equations having real solutions by factoring, taking square roots, completing the square, and applying the quadratic formula