Related+Learning+Material

Link to a list of trig functions videos from [|khanacademy]

Graphing the trig functions: media type="youtube" key="R0RM6FeiD8k" height="349" width="425" media type="youtube" key="s_NI50p-pcg" height="349" width="425"

Available data sets:
 * []
 * average temperatures
 * []
 * sunrise/sunset times
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 * tides of oceans
 * []
 * prey/predator models

Good online graphing calculator:
 * []

Or use this widget from WolframAlpha: media type="custom" key="9968049"