Fun and interesting links:

• FTC (UBC) ( applet)
• Cumulative area (Furman) ( applet)
• Gravity Anomalies
• Tutorial on FTC (at UTK)
• Construction Theorem (FTC) ( applet)
• On-line numerical integration utility (numerical integration)
• Rectangle Approximation Method (java applet)
• Riemann Sums (applet)
• Optimization:  java applets (UTK)
• Cross Section of Gutter:  applet
• Optimization problems with hints and solutions
• On-line linear approximation exercises (Hofstra)
• Implicit Differentiation: Notes (UBC) and astroid curve applet
• Second Derivative Applet
• First Derivative Applet
• Epsilon-Delta Applet
• Derivative Puzzles
• Surfing Derivatives:  java applet, you control the tangent line
• Animation:  tangent line moving along a curve (Paul Garrett, U. of Minnesota)
• Animation:  secant lines approaching tangent line (Paul Garrett, U. of Minnesota)
• Secant Line and Tangent Line:  java applet, you control the secant line)
• Logic Mazes
•  Macalester College Problem of the Week (905:  a logic puzzle)
• Don't be fooled by your graphing calculator (calculator difficulties)