Introduction
  - Characteristics of p: y = x²
Draw parabolas
  - p: y = x² ± c
  - p: y = ((x ± b))²
  - p: y = ((x ± b))² ± c
Parabola memory games
  - for y = x² ± c
  - for y = ((x ± b))²
  - Mixed problems
Shift parabolas
  - Shift with vector
  - Vertex form
  - Read vertex -expert-
Read equations
  - Selection problem -1-
  - Selection problem -2-
  - p: y = x² + bx ± c
  - p: y = x² - bx ± c
Determine vertex - problems
  - Completing the square
  - Dertemine V & draw p
pq vertex formula
  - Derivation
  - Practice pq-formula
Calculations
  - Does Q lie on p?
  - Calculate coordinates
  - Calculate parameters
  - Mixed problems -expert-
Parabola equation
   - equation y = x² + px + q
   - equation y = - x² + px + q
  - Mixed problems

Introduction
  - Explore parameter a
Read equation
  - Vertex form
  - Read vertex -expert-
  - Free typing
Draw parabolas
  - Problem on level -1-
  - ... for experts
Vertex by completing the square
  - Explanation -1-
  - Explanation -2-
  - Explanation -3-
  - Explanation -4-
  - Corresponding exercise
Vertex formula
  - Derivation
  - Corresponding exercise
Calculations
  - Does Q lie on p?
  - Calculate coordinates
  - Calculate parameters
  - Mixed problems -expert-
  - Vertex form exercise -expert 2-
Application tasks
  - Basketball throw

Visualization
  - Exploring relationships

Introduction
  - Exploring ...
Domain and Range
  - Problems on level -1-
  - Problems on level -2-
  - Problems on level -3-
  - ... for experts