Math Graphs
Houghton Mifflin: Math Graphs: Derivative and Continuity 2 [Pdf]
Learners are given two parts of the graph of a continuous differentiable function and examine the zeros, conditions of continuity, and a sketch of the derivative. The graph is available in PDF format.
Interactive Mathematics
Interactive Mathematics: Vital Revision for Fourier Series
Begin your studies of the Fourier Series with this lesson. It contains information on all of the essentials of getting started, including trigonometric functions, continuity, periodic functions, and more.
Other
Blue Moon Original Oil Paintings: The Principle of Unity
Illustrated essay on the principle of unity, also known as harmony, explains how the grouping techniques of alignment, proximity, similarity, and continuity can be used to create a unified, harmonious composition.
Other
Seton Hall University: Limits
Detailed tutorial which defines, explains, and has examples of various function limits.
Math Open Reference
Math Open Reference: Continuity: An Informal Discussion
Learn about continuity with this handy reference guide. Provides a detailed definition and examples that enhance further explanation. Includes links to related topics.
Mathematics Archives
Math Archives: Continuity
This visual calculus tutorial features a discussion of continuity with an interactive example.
Math Words
Math words.com: Continuous Function
This site defines what a continuous function is. It also gives the conditions that must be present for a function to be continuous at x = a.
Other
Karl's Calculus Tutor: Continuity: Places to Visit
This calculus tutorial explains the concept of continuity and provides several example problems.