The Graph of y = sin x
The Graph of y = cos x
The Graph of y = tan x
The Graph of y = sin ax
The Graph of y = a sin b (x-c)
Shifting and scaling of sine and cosine curve. (Amplitude,frequency and period).
http://www.exploremath.com/activities/Activity_page.cfm?ActivityID=23
Function Grapher
http://www.hofstra.edu/~matsrc/Graf/Graf.html
Graphing Calculator
http://www.geocities.com/CapeCanaveral/Launchpad/2426/calculator.html
Java Tools
http://www.shu.edu/projects/reals/classes/tools.html
Graphs Applets
http://math.hws.edu/javamath/config_applets/
Animated Graphs
http://math.hws.edu/javamath/config_applets/AnimatedGraph.html
