Varsity Tutors
Varsity Tutors: Hotmath: Quadratic Function
Students will use graphics to understand quadratic functions such as parabolas and determine the vertex, intercepts, domain, and range of the functions.
University College London
University College London: Quadratic Equations
This site offers an introduction to quadratic equations. Includes hyperlinked terms and examples.
University College London
University College London: Math Help Glossary: Keyword: Quadratic
A "glossary" definition of quadratic functions, including examples of quadratic and non-quadratic functions, and links to related definitions as well and graphs.
University College London
University College London: The Graph of Y = Ax Squared + Bx + C
Provides a walkthrough of graphs of quadratic functions, including what factors "shift" or otherwise affect the parabola.
Khan Academy
Khan Academy: Features of Quadratic Functions: Strategy
Identify the form of a quadratic function that immediately reveals a given feature of that function. Features in question are the y-intercept of the graph, the zeroes ("roots") of the function, and the vertex of the parabola. Students...
Khan Academy
Khan Academy: Features of Quadratic Functions
Find the zeroes ("roots") of quadratic functions and the vertex of their parabolas. Functions are given in standard, vertex, and factored form. Students receive immediate feedback and have the opportunity to try questions repeatedly,...
Varsity Tutors
Varsity Tutors: Hotmath: Graphing Quadratic Equations
Find a concise explanation of how to graph quadratic equations. Several examples are given and clearly explained.
CK-12 Foundation
Ck 12: Analysis: Methods for Solving Quadratic Functions
[Free Registration/Login may be required to access all resource tools.] This lesson applies factoring a quadratic equation to other types of polynomials that are in "quadratic form."
CK-12 Foundation
Ck 12: Algebra: Quadratic Functions and Their Graphs
[Free Registration/Login may be required to access all resource tools.] This lesson covers how to find the x-intercepts, vertex, axis of symmetry, and y-intercept of a parabola.
CK-12 Foundation
Ck 12: Algebra: Quadratic Functions and Their Graphs
[Free Registration/Login may be required to access all resource tools.] Graph and compare graphs of quadratic functions in the coordinate plane.
CK-12 Foundation
Ck 12: Algebra: Quadratic Functions and Their Graphs
[Free Registration/Login may be required to access all resource tools.] Learn the anatomy of the graph of a quadratic function.
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: Lio + Lola: Graphing Rational Functions
Graph rational functions using examples and step by step guide.
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.
Analyze Math
Analyze Math: Introduction to Polynomials
Students are introduced to polynomials. The tutorial defines monomials, the leading coefficient, binomials, trinomials, and the degree of a polynomial.
Curated OER
Polynomial Functions
Polynomial functions are functions with x as an input variable made up of several terms, each made up of two factors. Click the links for detailed explanations and examples.
Stefan Warner and Steven R. Costenoble
Finite Mathematics & Applied Calculus: Factoring Algebraic Expressions: Factoring Quadratics
The tutorial investigates how to factor quadratic equations. Students learn about the concept through class notes, examples, and practice problems.
Math Medics
S.o.s. Math: Factoring and Roots of Polynomials
This lesson describes a great number of topics. It gives examples and explains how to factor trinomials and other polynomials.
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.
Lawrence Hall of Science
The Math Page: Topics in Pre Calculus: Quadratics
Here is a site that clearly and thoroughly explains quadratic functions, including graphing functions and solving equations using factoring. There are example problems solved, problems for the student to attempt, and answers to the...
Lawrence Hall of Science
The Math Page: Topics in Pre Calculus: Completing the Square
Here is a site that clearly and thoroughly explains how to solve quadratic equations by completing the square. The quadratic formula is derived using this method on this page. Point this site out to students who have been absent or who...
Lawrence Hall of Science
The Math Page: Skill in Algebra: Quadratic Equations
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...
Cool Math
Coolmath: Making the Connection Between Graphing and Solving
Description and examples of the connection between solving and graphing quadratics.