What we did was we got a breadboard and used it to make light up these little LEDs.
It was challenging because you had to know were to put the connections on the breadboard.
The first thing we did was hook up a battery to the breadboard and connect a light emitting diode (LED).
It lit up, proving we had created a simple circuit. Next we took a transistor and made a circuit through its collector and emitter prongs.
The LED we hooked up didn't go on until we connected the middle prong (the base) to the positive bus.
Then current was allowed to flow from collector to emitter.
Soldering
To make more permanent circuits, you attach the components to a circuit board with metal solder.
We got to handle a really hot soldering iron to help melt the solder onto the connections. It wasn't easy to use just enough solder and not too much.
Here's a blinky I soldered.
