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Khan Academy

Khan Academy: Factors & Divisibility

For Students 9th - 10th Standards
Students practice multiple-choice problems with factors and divisibility.
Activity
Wyzant

Wyzant: Evaluating Expressions Calculator

For Students 9th - 10th Standards
Need assistance in evaluating a polynomial expression if you're given the values of all the variables? This "Calculator," from WyzAnt asks you to input the expression and the known values to be substituted in, and then displays the final...
Activity
Texas Instruments

Texas Instruments: The Letter Product Game

For Teachers 9th - 10th
This activity will encourage students' powers of deduction through a word game. This will allow a review of factoring integers. A simple extension allows a classroom discussion that will evolve into the Zero Product Theorem, essential to...
Activity
National Council of Teachers of Mathematics

The Math Forum: Ask Dr. Math: Dividing Polynomials

For Students 9th - 10th
Math Forum offers an example of how to simplify a complex rational expression by factoring.
Unit Plan
Texas A&M University

Wtamu Virtual Math Lab: College Algebra: Quadratic Equations

For Students 9th - 10th Standards
A detailed tutorial that will guide you through various methods for solving quadratic equations: factoring, square root, completing the square, and quadratic formula. Follow step-by-step examples, view video problem-solving...
Unit Plan
Lawrence Hall of Science

The Math Page: Skill in Algebra: Perfect Trinomial Square

For Students 9th - 10th
Here is a site that clearly and thoroughly explains multiplying and factoring perfect square trinomials. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point this site out to...
Handout
Other

Mathway: Algebra Formulas

For Students 9th - 10th Standards
Comprehensive resource provides algebra formulas for exponents, absolute value, factoring Pythagorean Theorem, linear equations, quadratic formula, distance formula, midpoint formula, and slope of a line through two points.
Unit Plan
PBS

Pbs: Proportional Scaling

For Students 6th - 8th
Examine some of the complexities and complications inherent in the development of a micro engine. This video focuses on how MIT researchers have to consider proportions comparing volume and surface area when factoring heat loss, taking...
Activity
Lawrence Hall of Science

The Math Page: Skill in Algebra: Skill in Algebra: Algebraic Fractions

For Students 9th - 10th
Explains how to find a common denominator between two rational expressions and how to reduce a fraction that involves factoring. There are example problems solved, problems for the student to attempt, and answers to the student problems....
eBook
Washington State University

Washington State University: Polynomial Division

For Students 9th - 10th Standards
This site contains a brief explanation of how to divide a polynomial by a monomial by factoring.
Activity
National Council of Teachers of Mathematics

The Math Forum: Ask Dr. Math: Long Division of Polynomials

For Students 9th - 10th Standards
This site is a help letter from a student asking how to divide polynomials. The response to this e-mail also discusses factoring as a method for doing the division.
Lesson Plan
Alabama Learning Exchange

Alex: What's the Real Cost of That Car?

For Teachers 9th - 10th
This is a Commerce and Information Technology lesson plan. A project requiring research, critical thinking and complex decision-making about factoring all the costs of purchasing a large ticket item - a car.
Lesson Plan
National Council of Teachers of Mathematics

The Math Forum: Suzanne Alejandre: Factor Lesson

For Teachers 9th - 10th Standards
Students will discover factoring through the area of a rectangle.
Handout
Other

Karl's Calculus Tutor: The Difference of Squares

For Students 9th - 10th
This site provides a general overview of the special case of factoring known as the difference of squares. This procedure highlights rationalizing the denominator.
Whiteboard
ClassFlow

Class Flow: Solutions to Quadratics

For Teachers 9th - 10th Standards
[Free Registration/Login Required] Shows students how to solve for x within a quadratic function (no factoring) and identify the root(s) of the function.
Activity
Math Is Fun

Math Is Fun: Algebra

For Students 9th - 10th Standards
Through this collection of definitions, lessons, problem-solving steps and strategies, and example questions, you'll learn why completing an algebra problem is a lot like solving a puzzle. After viewing introductory material and basic...

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