Completing the Square (Day 2)

Lesson Prep

Lesson Details

• Duration: 50 minutes

• Learning Goal: Develop conceptual understanding and procedural fluency with solving quadratics by completing the square.

Answer Keys

• Link to Answer Keys

Classwork

• Estimation 180 – Day 183 (Andrew Stadel)

• Warm Up

• Algebra Tiles Demonstration

• Practice

• Spiraling (Exponents Refresh)

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