Sir Isaac Newton, the inventor of modern calculus, actually called it by the rather funky term: "fluxions" or what might be referred to today as "math on the fly."

How do you measure things that are in motion or flux?

It was only when the apple famously fell from the tree that Newton had his "aha!" moment that led to a few basic rules for measuring speed, velocity and acceleration.

Around the Web, find out more about the topic at expert sites offering homework help, fun facts, and a bit of history about calculus from its early dawning in the 17th century to the present...

More about calculus around the Web:

The Calculus Page Problems List
- A mega Web page of where to find step-by-step calculus instructions & tutorials, Java applets and animations, exam preparation and sample exams, vector & multivariable calculus sites, and related resources for teachers.

Understanding Calculus
- The complete edition in 24 chapters including an online graphing calculator.

Finite Mathematics & Applied Calculus - Reviews, exercises, tutorials, interactive true/false quizzes with an extensive directory of online calculus, probability and statistics tools.

Graphics for the Calculus Classroom - First year calculus explained in animated gifs or Java applets, with additional resources to more advanced lessons.

Why
Study Calculus? - A math professor answers a Frequently Asked Question with a discussion of the history of practical applications and mathematical milestones.

Timeline
of Calculus History - Illustrated interactive timelines covering important people and major milestones from Johannes Kepler to Srinivasa Ramanujan with related resources to more information.