#### Previous Episodes

#### Lesson 1: Ex Nihilo

#### Lesson 2: Number Notation

#### Lesson 3: Comparison

#### Lesson 4: Addition & Subtraction

#### Lesson 5: Multiplication

#### Lesson 6: Division

#### Lesson 7: Exponentiation

#### Lesson 8: Equations

#### Lesson 9: Straight Lines

#### Lesson 10: Intersected Lines

#### Lesson 11: Curved Lines

#### Lesson 12: Polygons

#### Lesson 13: Circles & Ellipses

#### Lesson 14: Constructions

#### Lesson 15: Assessment

#### Lesson 16: Triangles in Circles

#### Lesson 17: Intersected Shapes

#### Lesson 18: Transformations

#### Lesson 19: Open Shapes

#### Lesson 20: Solid Shapes

#### Lesson 21: Locations

#### Lesson 22: Populations

#### Lesson 23: Matrices

#### Lesson 24: Rates

#### Lesson 25: Rate of Change

#### Lesson 26: Accumulated Change

#### Lesson 27: Complex Numbers