Students will understand that there has to be exactly enough power on the grid for what is being used by consumers after watching the assigned videos and reading the assigned articles. Students will use their knowledge of how to recognize and construct sine functions to determine how frequency, amplitude, and DC offset will change what a light bulb does. They will conduct an experiment that will show the effects on two different light bulbs. The class will use their discoveries to discuss how this experiment relates to the sine function and real-life situations. They should address how our world would be affected if we had a power outage.