# Interactive video lesson plan for: ☆ Operations with Rational and Irrational Numbers | Common Core Math

#### Activity overview:

In this lesson, we explore why the sum or product of two rational numbers is rational; that the sum of a rational number and an irrational number is irrational; and that the product of a nonzero rational number and an irrational number is irrational. For more MashUp Math content, visit http://www.mashupmath.com and join our free mailing list! :)

This lesson answers the questions: What is a rational number? What is an irrational number? What is the sum of two rational numbers? What is the product of two rational numbers? What is the sum of a rational and irrational number? What is the product of rational and irrational number?

Our lessons are perfect for flipped classroom math teachers and students. This lesson is aligned with the common core learning standards for math and the SAT math curriculum as well.

You can access the PDF guide that accompanies this lesson here: http://mashupmath.com/resources/

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1. Students enter a simple code

2. You play the video

3. The students comment

4. You review and reflect

* Whiteboard required for teacher-paced activities

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