Digits, Grade 8, Volume 1, Homework Helper

Contents

  • Authors and Advisors vi

  • Using the Homework Helper viii

  • Grade 8 TEKS x

  • Unit A: Number and Operations

    • Topic 1: Rational and Irrational Numbers

      • 1-1: Exploring Irrational Numbers 1

      • 1-2: Approximating Irrational Numbers 8

      • 1-3: Comparing and Ordering Rational and Irrational Numbers 15

      • 1-4: Exploring Scientific Notation 21

      • 1-5: Using Scientific Notation to Describe Very Large Quantities 27

      • 1-6: Additional Problem Solving 33

  • Unit B: Proportionality

    • Topic 2: Proportional Relationships, Lines, and Linear Equations

      • 2-1: Representing Proportional Relationships 40

      • 2-2: Linear Equations: y = mx 47

      • 2-3: The Slope of a Line 52

      • 2-4: Unit Rates and Slope 60

      • 2-5: The y-intercept of a Line 66

      • 2-6: Linear Equations: y = mx + b 71

      • 2-7: Distinguishing Between Proportional and Non-Proportional Situations 78

      • 2-8: Additional Problem Solving 86

    • Topic 3: Defining and Comparing Functions

      • 3-1: Recognizing a Function 91

      • 3-2: Representing a Function 99

      • 3-3: Linear Functions 107

      • 3-4: Nonlinear Functions 114

      • 3-5: Additional Problem Solving 119


End ofPage iii

Table of Contents

Digits, Grade 8, Volume 1, Homework Helper Unit A: Number and Operations Unit B: Proportionality Unit C: Expressions, Equations, and Relationships English/Spanish Glossary Formulas Math Symbols Formulas Measures Properties