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...
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Irrational Numbers; Rational Square Roots
Dr. Math responds to how one can tell whether a number is rational or irrational. A proof is discussed in the response.
![Ohio Department of Education: Eighth Grade Achievement Test (Practice Test)[pdf] Study Guide](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Ohio Department of Education: Eighth Grade Achievement Test (Practice Test)[pdf] Study Guide")
Other
Ohio Department of Education: Eighth Grade Achievement Test (Practice Test)[pdf]
Half-length practice test for the eighth grade OAT (Ohio Achievement Test). The test includes 15 multiple-choice and 4 open-response questions dealing with topics such as geometry (comparing volumes, angle measures), data analysis...
Wolfram Research
Wolfram Math World: Quadratic Equation
This MathWorld site shows how to derive the quadratic formula.
Other
Curious math.com: Math Is an Attitude
This site offers numbers tricks to help multiply and divide large numbers mentally. There are also tricks for powers and roots of numbers.
Math Aids
Math Aids: Exponents & Radicals Worksheets
Great resource to practice and strengthen math skills pertaining to exponents and radicals. Math worksheets are printable, may be customized, and include answer keys.
Wolfram Research
Wolfram Math World: Principal Square Root
MathWorld offers an explanation for the concept of principal square root is found here.
Oswego City School District
Regents Exam Prep Center: Simplifying Radicals
Use this site to learn how to simplify radicals, even when the radical is not a perfect square. These examples will be a guide to you in simplifying all kinds of radicals.
Math Planet
Math Planet: Algebra 1: Radical Expressions: The Graph of a Radical Function
Provides detailed information about the graph of a radical function through the use of examples and a brief video lesson. [2:10]
University of Saskatchewan (Canada)
University of Saskatchewan: Algebra 1 Review
A more advanced review of algebra concepts and practice review problems ranging from the basic rules of algebra to polynomials. A good test of readiness for higher level math courses.
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...
Illustrative Mathematics
Illustrative Mathematics: A Rei Radical Equations
The purpose of the task is to show students a situation where squaring both sides of an equation can result in an equation with more solutions than the original one, because it is possible to have two unequal numbers whose squares are...
Texas Instruments
Texas Instruments: Quadratic Equations
Students solve quadratic equations by factoring and finding square roots, as well as by graphing.
Quia
Ixl Learning: Irrational Numbers
Brush up on your math skills relating to irrational numbers then try some practice problems to test your understanding.
Shodor Education Foundation
Shodor: Using Your Calculator
This site deals with using a calculator to help solve and evaluate mathematical problems. This site provides a lengthy chart of basic operations performed by calculators, examples of problems to be solved using a calculator, as well as...
Oswego City School District
Regents Exam Prep Center: Multiplication and Division of Radicals
Learn the steps necessary for multiplying and dividing radicals. The examples are easy to follow.