3-9-2012 Irrational, Rational, Approximately Rational?

Teching the Core Curriculum Content Standards

Math Standards: Grade 8 - The Number System

Standards: 8.NS.1-2

STRAND	STANDARDS	RESOURCES
The Number System The goal - Know that there are numbers that are not rational, and approximate them by rational numbers.		Manga High Virtual Manipulatives Rational Number Project Math Moves U Super Maths World 8th Grade Math Games
	8.NS.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.	Fact Monster Definitions Rational Numbers on a Number Line Practice Page Real numbers Interactive Difference Between Rational and Irrational Numbers The Math Page Using Rational Numbers Dr. Math on Negative Numbers Adding and Subtracting Rational Numbers Quiz Printable Quiz - Level 7 Printable Quiz - Level 6 Rational and Irrational Worksheet Irrational Numbers Tutor Circle Explanation with Examples Worksheets
	8.NS.2. Use rational approximations of irrational numbers to compare the size of irrational numbers, locate them approximately on a number line diagram, and estimate the value of expressions (e.g., π2). For example, by truncating the decimal expansion of √2, show that √2 is between 1 and 2, then between 1.4 and 1.5, and explain how to continue on to get better approximations.	Dr. Math on Pi Square Root of 2 Rational and Irrational Numbers on a Number Line Number Line Practice 8th Grade Irrational Numbers IXL Practice Rational and Irrational Game Line Up Cards Converting Repeating Decimals to Fractions Converting on Khan Academy Converting on Hot Math Solving Linear Equations Solving Linear Equations pt. 1 Linear Equation Practice