Burke County Middle School

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Byrd, Janet » 8th Grade Math

8th Grade Math

Welcome to 8th grade math 2016 - 2017.
 
Unit 2  - EXPONENTS AND EQUATIONS
 
Aug 1-5  MGSE8.EE.2  PERFECT SQUARE ROOTS AND CUBE ROOTS 
Use square root and cube root symbols to represent solutions to equations. Recognize that x2 = p (where p is a positive rational number and lxl < 25) has 2 solutions and x3 = p (where p is a negative or positive rational number and lxl < 10) has one solution. Evaluate square roots of perfect squares < 625 and cube roots of perfect cubes > -1000 and < 1000.  
 
Aug 8-14 MGSE8.NS.2 APPROXIMATING SQUARE ROOTS OF NON PERFECT SQUARE NUMBERS
Use rational approximation of irrational numbers to compare the size of irrational numbers, locate them approximately on a number line, and estimate the value of expressions (e.g., estimate π2 to the nearest tenth). For example, by truncating the decimal expansion of √2 (square root 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.
 
AUG 14-16 MGSE8.NS.1  IDENTIFY RATIONAL AND IRRATIONAL NUMBERS - CHANGE FROM DECIMAL TO FRACTION - INCLUDING REPEATING NUMBERS
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