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.

35 Lesson(s)

Algebra I » Unit: Quadratic Functions
Amherst, NY
Environment: Suburban

Big Idea:

The structure of a quadratic equation can help students determine how to solve the equation.

Standards:

Favorites (5)

Resources (15)

Reflections (1)

Algebra I » Unit: Quadratic Functions
Algebra I » Unit: Quadratic Functions
Amherst, NY
Environment: Suburban

Big Idea:

Standards:

Favorites (16)

Resources (13)

Reflections (1)

Solving Quadratic Trig Equations (Day 1 of 2)

12th Grade Math » Unit: Trigonometric Equations
12th Grade Math » Unit: Trigonometric Equations
Phoenix, AZ
Environment: Urban

Big Idea:

Standards:

Favorites (1)

Resources (31)

Reflections (4)

The Pythagorean Theorem and the Distance Formula

Algebra I » Unit: Radical Expressions, Equations, and Rational Exponents
Algebra I » Unit: Radical Expressions, Equations, and Rational Exponents
Rogers, AR
Environment: Rural

Big Idea:

Standards:

Favorites (4)

Resources (11)

Building Quadratic Functions: f(x), kf(x) and f(kx)

Algebra I » Unit: Interpret and Build Quadratic Functions and Equations
Algebra I » Unit: Interpret and Build Quadratic Functions and Equations
Salem, MA
Environment: Urban

Big Idea:

Students use technology to construct their own understanding of different operations on the graph of quadratic functions!

Standards:

Favorites (1)

Resources (19)

Reflections (1)

Algebra I » Unit: Interpret and Build Quadratic Functions and Equations
Algebra I » Unit: Interpret and Build Quadratic Functions and Equations
Salem, MA
Environment: Urban

Big Idea:

Standards:

Favorites (13)

Resources (10)

Unit Assessment: Quadratic Functions and Equations

Algebra I » Unit: Interpret and Build Quadratic Functions and Equations
Algebra I » Unit: Interpret and Build Quadratic Functions and Equations
Salem, MA
Environment: Urban

Big Idea:

Students complete a unit assessment aligned to unit standards - provides excellent data source for teacher's to adjust and refine their curriculum and instruction!

Standards:

Favorites (23)

Resources (6)

12th Grade Math » Unit: Polynomial Functions and Equations
12th Grade Math » Unit: Polynomial Functions and Equations
Phoenix, AZ
Environment: Urban

Big Idea:

Review polynomial operations with NCTM’s polynomial puzzlers and then practice solving quadratic equations by moving through stations.

Standards:

Favorites (8)

Resources (25)

Reflections (2)

12th Grade Math » Unit: Polynomial and Rational Functions
12th Grade Math » Unit: Polynomial and Rational Functions
Troy, MI
Environment: Suburban

Big Idea:

Standards:

Favorites (3)

Resources (16)

Quadratic Equations, Day 2 of 2

Algebra II » Unit: The Complex Number System
Algebra II » Unit: The Complex Number System
Fort Collins, CO
Environment: Suburban

Big Idea:

Knowledge of quadratic equations is an important prerequisite for studying complex numbers.

Standards:

Favorites (3)

Resources (19)

Reflections (1)

Algebra I » Unit: Quadratic Functions
Algebra I » Unit: Quadratic Functions
Amherst, NY
Environment: Suburban

Big Idea:

Although it is not as efficient as other methods, the quadratic formula can be used to solve any quadratic equation.

Standards:

Favorites (7)

Resources (16)

Reflections (1)

Algebra I » Unit: Quadratic Functions
Algebra I » Unit: Quadratic Functions
Amherst, NY
Environment: Suburban

Big Idea:

Standards:

Favorites (5)

Resources (13)

Reflections (1)

Factoring and Completing the Square to Find Zeros

Algebra I » Unit: Interpret and Build Quadratic Functions and Equations
Algebra I » Unit: Interpret and Build Quadratic Functions and Equations
Salem, MA
Environment: Urban

Big Idea:

Standards:

Favorites (3)

Resources (19)

Reflections (1)

The Three Musketeers: Simplifying the Quadratic Formula

Algebra I » Unit: Interpret and Build Quadratic Functions and Equations
Algebra I » Unit: Interpret and Build Quadratic Functions and Equations
Salem, MA
Environment: Urban

Big Idea:

Just like the Three Musketeers, the three pieces of the quadratic formula stick together, and work together to find solutions!

Standards:

Favorites (7)

Resources (17)

Reflections (1)

Algebra I » Unit: Interpret and Build Quadratic Functions and Equations
Algebra I » Unit: Interpret and Build Quadratic Functions and Equations
Salem, MA
Environment: Urban

Big Idea:

Standards:

Favorites (5)

Resources (26)

Reflections (3)
Common Core Math