CK-12 Foundation
Ck 12: Algebra: Solutions Using the Discriminant
[Free Registration/Login may be required to access all resource tools.] Learn how to use the discriminant to solve problems and determine the number of solutions to quadratic equations.
CK-12 Foundation
Ck 12: Algebra: Factorization of Quadratic Expressions
[Free Registration/Login may be required to access all resource tools.] This lesson covers factoring quadratics when the leading coefficient is not one.
Sophia Learning
Sophia: Solving for Quadratic Equations
Solve for x using the quadratic formula and complete practice problems. Assess learning with a quiz.
BBC
Bbc: Higher Bitesize Maths: Quadratic Theory
A tutorial on quadratics presents topics including: factoring and solving quadratics, graphing quadratic functions, using completing the square and the quadratic formula to solve functions, the discriminant and conjugates. Plenty of...
Annenberg Foundation
Annenberg Learner: Insights Into Algebra 1. Workshop 4
Determine the height of a bouncing ball by creating a quadratic function for each.
Other
Cre: Ecuaciones Cuadraticas
In Spanish. Clear step by step directions, explanations and example problems of quadratic equations. Explains factorization, the quadratic formula, and completing the square.
McGraw Hill
Glencoe Mathematics: Online Study Tools: Quadratic and Exponential Functions
Students show comprehension of advanced mathematical concepts in Algebra I. The questions check understanding on quadratic and exponential functions.
University of Georgia
University of Georgia: Writing Quadratic Equations
In this lesson, students will learn how to find an equation of a quadratic function when given the vertex of the parabola, and how to find the equation that defines a quadratic function when given three points.
Purple Math
Purplemath: Algebra Resources
Purplemath contains about 40 different lessons on various algebra topics. The lessons are divided into five different sections: preliminary topics, beginning algebra, intermediate algebra, advanced algebra, and word problems. The lessons...
Cool Math
Coolmath: Making the Connection Between Graphing and Solving
Description and examples of the connection between solving and graphing quadratics.
University of Texas at Austin
Mathematics Teks Toolkit: Quadratic Functions
Students use a real-world problem to solve for quadratic functions.
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: Completing the Square 2 Exercises
This Algebra Cruncher generates an endless number of practice problems for completing the square with solutions.
Interactive Mathematics
Interactive Mathematics: Find Equation of a Quadratic Function From Its Graph
A detailed explanation of how to find a quadratic equation from its graph using different methods, including using software.
University of Guelph
University of Guelph: Physics Tutorials: Algebra
This site reviews factoring quadratics, factoring higher order polynomials, and partial fractions.
Interactive Mathematics
Interactive Mathematics: Quadratic Equations
Using modeling, the world of quadratics is explored. Learn how to solve quadratics using methods of factoring, completing the square, and the quadratic formula. Also included are methods for graphing quadratic functions.
CK-12 Foundation
Ck 12: Algebra: Use Graphs to Solve Quadratic Equations
[Free Registration/Login may be required to access all resource tools.] Determine the number of solutions to a quadratic equation and find such solutions by graphing.
CK-12 Foundation
Ck 12: Algebra: Identification of Quadratic Models
[Free Registration/Login may be required to access all resource tools.] This lesson covers fitting a data set to a quadratic equation.
CK-12 Foundation
Ck 12: Algebra: Graphing Calculator to Graph Quadratic Functions
[Free Registration/Login may be required to access all resource tools.] This lesson covers how to use a graphing calculator to graph quadratic equations. Students examine guided notes, review guided practice, and attempt practice problems.
CK-12 Foundation
Ck 12: Algebra: Vertical Shifts of Quadratic Functions
[Free Registration/Login may be required to access all resource tools.] Learn about the effects of shifting quadratic functions vertically.
CK-12 Foundation
Ck 12: Analysis: Quadratic Formula and Complex Sums
[Free Registration/Login may be required to access all resource tools.] This lesson covers solving quadratic equations when the answers are complex numbers. Students examine guided notes, review guided practice and attempt practice...
CK-12 Foundation
Ck 12: Analysis: Graphs of Quadratic Functions
[Free Registration/Login may be required to access all resource tools.] Students review of quadratic function graphing methods. Students examine guided notes, review guided practice, watch instructional videos and attempt practice problems.
CK-12 Foundation
Ck 12: Algebra: Factorization Using Perfect Square Trinomials
[Free Registration/Login may be required to access all resource tools.] Factor perfect square trinomials and the difference of two squares and solve quadratic equations by factoring.