Today in class, we learned the basics about circuits and Arduino.  I made 4 circuits: one with just a battery and a bulb, one with a battery, bulb, and switch, and then the aforementioned circuits with an Arduino.  We had some difficulties figuring out why the light bulb was not working at first.  we soon discovered that it was not an error on my part, but a burnt out bulb.  After that, Ms. McDonald explained how the breadboards worked.  I then had a better grasp on how and why the circuits worked to transfer energy from the battery to the light.