Reflection: Connection to Prior Knowledge Solving Quadratic Functions Using the Quadratic Formula - Section 1: Warm Up


I think it is important to help students see the connection between deriving the Quadratic Formula by completing the square.  By using students' prior knowledge of completing the square, it is amazing to some students how the Quadratic Formula is formed.  Below is a video from Khan Academy modeling the proof:

  Importance of Deriving the Quadratic Formula by Completing the Square
  Connection to Prior Knowledge: Importance of Deriving the Quadratic Formula by Completing the Square
Loading resource...

Solving Quadratic Functions Using the Quadratic Formula

Unit 8: Quadratic Functions
Lesson 8 of 10

Objective: SWBAT solve a Quadratic Equation using the Quadratic Formula with and without a calculator.

Big Idea: To be able to consistently get the correct solution(s) using the Quadratic Formula on Quadratic Equations or Applications through Practice and Verification.

  Print Lesson
roots (Algebra), Math, quadratic formula, Quadratic Equations, x-intercepts, solution, Profit Problem, Collaborative Activity, calculator
  50 minutes
screen shot 2015 07 03 at 1 35 22 pm
Similar Lessons
The Cell Phone Problem, Day 1
Algebra II » Rational Functions
Big Idea: Real world modeling of rational functions. Cell phone signal strength, can you hear me now?
Fort Collins, CO
Environment: Suburban
Jacob Nazeck
Quadratic Function Jigsaw
12th Grade Math » Polynomial and Rational Functions
Big Idea: Use a jigsaw grouping technique to review quadratic functions.
Troy, MI
Environment: Suburban
Tim  Marley
Graphing Linear Functions in Standard Form (Day 1 of 2)
Algebra I » Graphing Linear Functions
Big Idea: Students will analyze the importance of intercepts in linear function, and use them to graph lines that are in an unfamiliar format.
Washington, DC
Environment: Urban
Noelani Davis
Something went wrong. See details for more info
Nothing to upload