Khan Academy
Khan Academy: Start Here! Ready to Dive Into Some Math?
This is an overview this instructional activity; we're going to develop a powerful formula that will allow us to easily calculate points along a parabolic arc. It also explains what you need to do know before you begin.
Khan Academy
Khan Academy: Rendering: Ready to Dive Into Some Math?
In this instructional activity we are going to explore the most fundamental calculation a ray tracer performs: ray object intersection. It also lists information you need to know before you start this instructional activity.