The series circuit is a circuit in which the current takes a single path and the current in the circuit passes through every component in the circuit. The series circuit we created initially did not work because the two legs of the LED's were touching making the LEDs unable to light up. By starting over we were able to make the wiring more spaced out, leading to a circuit that is connected by the right wires. By starting the whole circuit over, we were able to light up the LEDs and complete the series circuit. As seen in the video, we needed to press both of the buttons to turn on the LEDs and if we only pressed one, none of the lights would turn on. We had created an "AND" gate circuit in which both switches had to be turned on to have the whole circuit's current to flow. 

The parallel circuit is a circuit in which multiple paths exists for the current to navigate through. This time, by learning from our mistake in the previous circuit, it was crucial to space out the components on the foamboard—LEDs, batteries and switches—carefully to prevent unintended interactions and ensure reliable performance. Each component was connected in parallel to a common power source, allowing independent operation. As seen in the video, the circuit works when we press both switches, but it also works when press only one of the switches. We have simulated an "OR" circuit in which the current can flow even when only one of the switches is turned on.