Activity
Varsity Tutors

Varsity Tutors: Hotmath: Practice Problems: The Quadratic Formula

For Students 9th - 10th
Twenty-five problems present a variety of problems working with various aspects of solving equations using the quadratic formula. They are given with each step to the solution cleverly revealed one at a time. You can work each step of...
Unit Plan
CK-12 Foundation

Ck 12: Algebra: The Quadratic Formula: Deriving and Using the Quadratic Formula

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] This lesson covers deriving the quadratic formula and using it to solve any quadratic equation.
Unit Plan
Cool Math

Coolmath: The Quadratic Formula

For Students 9th - 10th Standards
Reference material and practice problems using the quadratic formula.
Handout
Math Medics

S.o.s. Math: Quadratic Formula: Completing the Square

For Students 9th - 10th Standards
This tutorial explains the quadratic formula by reviewing its origin from the process of completing the square. Includes examples and a few exercises.
Unknown Type
Wyzant

Wyzant: Solving Using the Quadratic Formula Worksheet

For Students 9th - 10th Standards
The practice sheet reviews how to solve equations using the quadratic formula. The resource consists of 20 questions with answers available.
Unit Plan
Lawrence Hall of Science

The Math Page: Skill in Algebra: Quadratic Equations

For Students 9th - 10th Standards
Here is a site that clearly and thoroughly explains the quadratic equations, including how to solve them by factoring, completing the square, and using the quadratic formula. There are example problems solved, problems for the student to...
Unknown Type
Khan Academy

Khan Academy: Solve Quadratic Equations: Complex Solutions

For Students 9th - 10th Standards
Solve quadratic equations using the quadratic formula. Some of the equations have real solutions while others have complex solutions.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: The Discriminant

For Students 10th - 12th
[Free Registration/Login may be required to access all resource tools.] This lesson uses the discriminant to determine how many real solutions a quadratic equation has.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: A sse.b.3: Profit of a Company

For Teachers 9th - 10th
This task compares the usefulness of different forms of a quadratic expression. Students have to choose which form most easily provides information about the maximum value. Aligns with A-SSE.B.3.