CCSS.Math.Content.8.NS.A.1 - Know that numbers that are not rational are called irrational. Understand informally that every number has a decimal expansion; for rational numbers show that the decimal expansion repeats eventually, and convert a decimal expansion which repeats eventually into a rational number.
Authors: National Governors Association Center for Best Practices, Council of Chief State School OfficersTitle: CCSS.Math.Content.8.NS.A.1 Know That Numbers That Are Not Rational Are Called Irrational.... The Number System - 8th Grade Mathematics Common Core State Standards
Publisher: National Governors Association Center for Best Practices, Council of Chief State School Officers, Washington D.C.
Copyright Date: 2010
(Page last edited 10/08/2017)
- Integers, Rational and Irrational Numbers - Explanation from the Math Forum
- Line Up Cards - Lesson plan on reviewing rational and irrational numbers [From the Internet archive, the Wayback Machine.]
- More Practice with Rational and Irrational Numbers - Five question quiz [From the Internet archive, the Wayback Machine.]
- Practice with Rational and Irrational Numbers - Eight question quiz [From the Internet archive, the Wayback Machine.]
- Rational and Irrational numbers - Review and practice
- Rational and Irrational Numbers - Five topics presented at the Math Page
- Rational Numbers - This explanation has a good concept map to clarify the relationship between types of numbers
- The Irrationality of the Square Root of 2 - Explanation from Platonic Realms
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