# StartÂ here!

Overview of modeling grass with parabolas.

# Welcome to environment modeling!

In this topic we're going to explore how realistic blades of grass are modeled using

**parabolic arcs**.This topic contains two lessons:

- Appropriate for grades five and up
- Design your own blade of grass using midpoints and simulate it as a flowing field.

- Appropriate for grades nine to 12
- Discover the equation used at Pixar to efficiently draw parabolic arcs.