Today we learned about how to use breadboards. Are first task was to light up one LED light without using the power rails. The LED lights had two legs, one shorter and one longer. The longer side was called the cathode (positive) side and the shorter side was called the anode (negative) side. The cathode side goes on the same side as the negative (black) battery wire of the breadboard. The anode side goes on the same side as the positive (red) battery wire, in the same row. The battery pack wires go in the same row as the LED light.
The second thing we did was light up an LED light using the power rails. The LED light goes in the same way as before. The next step is putting the battery pack wires in the power rails this time. The positive side goes in the positive side of the rail and the negative side goes in the negative side of the rail. The last step is putting jumper cables in to connect the power rails to the rest of the breadboard. One side of the jumper cable goes in the same row as the LED light and the other goes anywhere in the power rail, depending on where the negative or positive wires are. The other jumper cable goes on the other side of the breadboard.
The last thing we did was put three LED lights in the breadboard and test all three switches. In order to do that, three extra jumper cables would be added and six alligator clips. On any side, the three (of six in total) jumper cables are taken out on the side that is in the power rail. The three extra jumper cables are inserted in the same place the the jumper cable was just taken out of. Each alligator clip is attached to one of the jumper cables sticking up. The other sides of those alligator clips are attached to the tin foil parts on the switches. When the switch is turned on, the lights light up, depending on which one was switched on.