We carry the KidWind Power Output Pack (KW-POP) because it is a nice collection of load devices (a simple motor, and three different color LEDs that require different voltages to illuminate). These are great for simple tests of the power output of wind turbines or solar panels.

We have never developed new curricular material for using this pack. The attached PDF to this article was developed by the The KidWind Project. Pages 10-15 are a good reference for using these parts.
http://www2.vernier.com/til/4185/816012_f9c2d46030994207aee0903232e725f9.pdf

See also:
Why can't I light an LED with my wind turbine?
Go Direct^® Energy Sensor (GDX-NRG)