CK-12 Foundation
Ck 12: Algebra: Completing the Square
[Free Registration/Login may be required to access all resource tools.] This lesson covers completing the square when the leading coefficient is not equal to one.
Cool Math
Coolmath: Graphing by Completing the Square Intro
This algebra lesson introduces how to complete the square in a parabola.
Cool Math
Coolmath: Graphing by Completing the Square Freaky Things That Can Happen
This algebra lesson shows how to deal with different types of things that can happen when you are completing the square.
Cool Math
Coolmath: Graphing by Completing the Square How
Explore and understand graphing by completing the square.
Purple Math
Purplemath: Completing the Square: Finding the Vertex
Demonstrates step-by-step how to complete the square to find the vertex of a parabola. Thorough descriptions of each problem.
ClassFlow
Class Flow: Solve by Completing the Square
[Free Registration/Login Required] This flipchart explores the steps for solving quadratics by completing the square.
CK-12 Foundation
Ck 12: Algebra: Factor Polynomials Using Special Products
[Free Registration/Login may be required to access all resource tools.] This lesson covers factoring perfect square trinomials and the difference of squares.
Other
Dans Math: Lessons: Intermediate Algebra
College professor Dan Bach presents a review of algebra concepts, including factoring, quadratic equations, and graphing parabolas. The examples are detailed, but easy to follow. This is a good site for reviewing before tests and quizzes.
CK-12 Foundation
Ck 12: Algebra: Solving Problems by Factoring
[Free Registration/Login may be required to access all resource tools.] This lesson covers solving quadratic equations by factoring.
Purple Math
Purplemath: Graphing Quadratic Functions: Introduction
The most basic quadratic is y = x2. The general technique for graphing quadratics is the same as for graphing linear equations. The quadratics graph as curvy lines (called "parabolas"), rather than the straight lines generated by linear...