Looking for free content to use with your textbook? You’ve come to the right place!
Get Free Content to Use with Digits – 8th Grade
Khan Academy is a nonprofit with thousands of free videos, articles, and practice questions for just about every skill.
No ads, no subscriptions – just 100% free, forever.
| Lesson 1-1: Expressing Rational Numbers with Decimal Expansion |
| Lesson 1-2: Exploring Irrational Numbers |
| Lesson 1-3: Approximating Irrational Numbers |
| Lesson 1-4: Comparing and Ordering Rational and Irrational Numbers |
| Lesson 1-5: Problem Solving |
| Lesson 2-1: Solving Two-Step Equations |
| Lesson 2-2: Solving Equations with Variables on Both Sides |
| Lesson 2-3: Solving Equations Using the Distributive Property |
| Lesson 2-4: Solutions — One, None, or Infinitely Many |
| Lesson 2-5: Problem Solving |
| Lesson 3-1: Perfect Squares, Square Roots, and Equations of the form x^2= p |
| Lesson 3-2: Perfect Cubes, Cube Roots, and Equations of the form x^3 = p |
| Lesson 3-3: Exponents and Multiplication |
| Lesson 3-4: Exponents and Division |
| Lesson 3-5: Zero and Negative Exponents |
| Lesson 3-6: Comparing Expressions with Exponents |
| Lesson 3-7: Problem Solving |
| Lesson 4-1: Exploring Scientific Notation |
| Lesson 4-2: Using Scientific Notation to Describe Quantities |
| Lesson 4-3: Using Scientific Notation to Describe Very Small Quantities |
| Lesson 4-4: Operating with Numbers Expressed in Scientific Notation |
| Lesson 4-5: Problem Solving |
| Lesson 5-1: Graphing Proportional Relationships |
| Lesson 5-2: Linear Equations: y= mx |
| Lesson 5-3: The Slope of a Line |
| Lesson 5-4: Unit Rates and Slope |
| Lesson 5-5: The y-intercept of a Line |
| Lesson 5-6: Linear Equations: y= mx + b |
| Lesson 5-7: Problem Solving |
| Lesson 6-1: What is a System of Linear Equations in Two Variables? |
| Lesson 6-2: Estimating Solutions of Linear Systems by Inspection |
| Lesson 6-3: Solving Systems of Linear Equations by Graphing |
| Lesson 6-4: Solving Systems of Linear Equations Using Substitution |
| Lesson 6-5: Solving Systems of Linear Equations Using Addition |
| Lesson 6-6: Solving Systems of Linear Equations Using Subtraction |
| Lesson 6-7: Problem Solving |
| Lesson 7-1: Comparing Functions |
| Lesson 7-2: Representing a Function |
| Lesson 7-3: Linear functions |
| Lesson 7-4: Nonlinear Functions |
| Lesson 7-5: Increasing and Decreasing Intervals |
| Lesson 7-6: Sketching a Function Graph |
| Lesson 7-7: Problem Solving |
| Lesson 8-1: Defining a Linear Function Rule |
| Lesson 8-2: Rate of Change |
| Lesson 8-3: Initial Value |
| Lesson 8-4: Comparing Two Linear Functions |
| Lesson 8-5: Constructing a Function to Model a Linear Relationship |
| Lesson 8-6: Problem Solving |
| Lesson 9-1: Translations |
| Lesson 9-2: Reflections |
| Lesson 9-3: Rotations |
| Lesson 9-4: Congruent Figures |
| Lesson 9-5: Problem Solving |
| Lesson 10-1: Dilations |
| Lesson 10-2: Similar Figures |
| Lesson 10-3: Relating Similar Triangles and Slope |
| Lesson 10-4: Problem Solving |
| Lesson 11-1: Angles, Lines, and Transversals |
| Lesson 11-2: Reasoning and Parallel Lines |
| Lesson 11-3: Interior Angles of Triangles |
| Lesson 11-4: Exterior Angles of Triangles |
| Lesson 11-5: Angle-Angle Triangle Similarity |
| Lesson 11-6: Problem Solving |
| Lesson 12-1: Reasoning and Proof |
| Lesson 12-2: The Pythagorean Theorem |
| Lesson 12-3: Finding Unknown Leg Lengths |
| Lesson 12-4: The Converse of the Pythagorean Theorem |
| Lesson 12-5: Distance in the Coordinate Plane |
| Lesson 12-6: Problem Solving |
| Lesson 13-1: Surface Area of Cylinders |
| Lesson 13-2: Volumes of Cylinders |
| Lesson 13-3: Surface Area of Cones |
| Lesson 13-4: Volumes of Cones |
| Lesson 13-5: Surface Areas of Spheres |
| Lesson 13-6: Volumes of Spheres |
| Lesson 13-7: Problem Solving |
| Lesson 14-1: Interpreting a Scatter Plot |
| Lesson 14-2: Constructing a Scatter Plot |
| Lesson 14-3: Investigating Patterns- Clustering and Outliers |
| Lesson 14-4: Investigating Patterns- Associations |
| Lesson 14-5: Linear Models- Fitting a Straight Line |
| Lesson 14-6: Using the Equation of a Linear Model |
| Lesson 14-7: Problem Solving |
| Lesson 15-1: Bivarate Categorical Data |
| Lesson 15-2: Constructing Two-Way Frequency Tables |
| Lesson 15-3: Interpreting Two-Way Frequency Tables |
| Lesson 15-4: Constructing Two-Way Relative Frequency Tables |
| Lesson 15-5: Interpreting Two-Way Relative Frequency Tables |
| Lesson 15-6: Choosing a Measure of Frequency |
| Lesson 15-7: Problem Solving |