National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Applying the Definition of a Parabola
Dr. Math responds to a student question about parabolas. The student asks a series of questions about a parabola, including how to derive the formula of a parabola from the definition, a parabola is the set of all point equal distance...
National Council of Teachers of Mathematics
The Math Forum: An Introduction to Parabolas
"Dr. Math" wonderfully discusses the basics of parabolas. He identifies where in our lives we would see parabolas as well as mentioning some of the terminology associated with them. A link is provided for information on conic sections.