# Rational Expressions Teacher Resources

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#### Rewrite Rational Expressions: Common Core High School Algebra

Students may dread the fraction, but don't let them dread the rational function. Here are some lessons, videos, and worksheets to help learners practice and comprehend the idea of rational functions, and see that they already know about...

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#### Algebra: High School Common Core Math

All Algebra, all the time! Here is a compiled list of resources that address all of the standards regarding Algebra Common Core for high school. Each resource has the main standard it addresses under the notes section of the item.

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#### Simplifying Radicals

Let's get students ready for radicals! Browse through the basics of simplifying radicals and finish with rationalizing the denominator. The collection contains videos, worksheets, lesson plans, and a quick reference sheet at the end.

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#### Interpret the Structure of Expressions: Common Core High School Algebra

One of the foundations of Algebra is the understanding of expressions and their parts. This collection focuses on the different types of expressions and while some are specific to one type of function, others blend the general idea of...

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#### How Do You Subtract Two Rational Expressions with Different Denominators?

Reinforce instruction on the least common denominator and subtracting rational expressions with this tutorial video. Learners can view this video in class or at home. Consider using this resource to supplement your lesson plan.

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#### How Do You Subtract Two Rational Expressions with the Same Denominator?

Rational expressions that are in the form of fractions. Yuk! The teacher demonstrates how to subtract one rational expression from the other when the expressions have a common denominator. Combine like terms and write it in simplest form.

EngageNY

#### Comparing Rational Expressions

Introduce a new type of function through discovery. Math learners build an understanding of rational expressions by creating tables and graphing the result.

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#### How Do You Divide Two Rational Expressions?

An instructor walks viewers through a complicated problem in which she divides 2 rational expressions. For this problem, she has to find excluded values, use the zero product property, multiply, divide, cancel, and simplify. This video...

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#### Why is it Called a Rational Expression?

If your algebraic expression is a ratio of two polynomials then you have a rational expression. Find out what that might look like.

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#### Topic 9.4 - Adding and Subtracting Rational Expressions

This activity contains a good selection of problems of adding and subtracting rational expressions. There are eight problems. None of the problems have common denominators. A few are mixed expressions and some require factoring. Answers...

EngageNY

#### Equivalent Rational Expressions

Rational expressions are just fancy fractions! Pupils apply fractions concepts to rational expressions. They find equivalent expressions by simplifying rational expressions using factoring. They include limits to the domain of the...

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#### Connecting Fractions and Rational Expressions

Teach class members to work with rational expressions using their knowledge of fractions. The lesson plan starts with a warm-up of rational expressions at four different levels of complexity. The different levels continue throughout the...

EngageNY

#### Multiplying and Dividing Rational Expressions

Five out of four people have trouble with fractions! After comparing simplifying fractions to simplifying rational expressions, pupils use the same principles to multiply and divide rational expressions.

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#### Addition and Subtraction of Rational Expressions

A rational expression is a fraction where the denominator and/or the numerator is a polynomial. The resource presents rational expressions and how to add and subtract them. Additionally, the video connects the addition and subtraction of...

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#### Multiplication of Rational Expressions

Cancel that! Young mathematicians see how factoring and canceling can be very beneficial. The presenter works through examples of multiplying two rational expressions where the factors are simplified first. Factoring complex rational...

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#### Division of Rational Expressions

Demonstrate the steps of dividing rational expressions with an instructional video that works through two division problems. Numerators and denominators are quadratic trinomials and include several common factors.

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#### Division of Rational Expressions: Step by Step

Division just got a little trickier! An interactive lesson highlights the steps of dividing two rational expressions. Young scholars determine the order of the steps from a bank of possible work.

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#### Subtracting Rational Expressions

This worksheet contains 10 problems on subtracting rational expressions. It starts out with like denominators and progresses to more complicated problems. Answers are included.

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#### Recognizing When a Rational Expression is Undefined

It only takes the denominator to be zero to make an expression undefined. A video resource makes the connection of undefined fractions to rational expressions. It points out that to determine when a rational expression is undefined, you...

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#### Rational Expressions Two - Addition and Subtraction

This worksheet is a mix of 24 problems on adding and subtracting rational expressions. All of the problems have unlike denominators. Most require factoring of the denominators, and a few contain mixed expressions and three expressions....

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#### Rational Expressions: Multiplying and Dividing

Make rational expression instruction fun with this instructional game! Players toss two coins onto a grid with an assortment of rational expressions. They have 60 seconds to multiply or divide the two expressions. If successful, the team...

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#### Multiplying and Dividing Rational Expressions 1

Provide your algebra class with some review of rational expressions in this video. Sal uses several sample problems to show viewers the process, and his explanations are clear and easy to understand.

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#### Multiplying and Dividing Rational Expressions 1

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#### How Do You Multiply a Rational Expression by a Polynomial?

Multiply a rational expression and a polynomial. No problem, you can do it. Turn your polynomial into a fraction and multiply. You might need to factor your polynomials first to see if you can cancel out some terms, thereby reducing it...