Electricity Quiz and Circuit Board

For the past couple of weeks in Tech Ed class, we worked on two things. An Electricity Quiz was one of them.  With with wires on the backside of the piece of cardboard it was on, so that when we connected a battery and a small lightbulb to the snaps on the front, the light would light up completing the circuit.

[front]

[back]

As you can see, the wires were first attached to the question on the right hand side column, and then the ran to the back of the answer on the left side column.  If we complete the circuit with a battery and a lightbulb, the lightbulb will light up if you connected the right answer to the question.

We also worked on a circuit board.  Everyone in the class chose a baggy with different components to the circuit board inside.  I happened to choose a decision maker.  Inside the bag was the board itself, four different resistors, a green LED light, a red LED light, a switch, and three or four other things that I can't remember the name of.  When I put it all together, it looked like this:

[front]

We attached the components of the circuit board with solder.  To solder the pieces to the board, we used a tool that was about 500-750 degrees at the tip and it melted the solder on contact.  The back of the board looked like this:

[back]

Once we turned it on and connected a battery to the end of the red and black wires and complete the circuit, you could press the button (the big black square in the center) either the green light or the red light would light up, indicating 'yes' or 'no'.

Through out these past few weeks we were taught how to solder, build a circuit correctly, and build a circuit board and be able to get a general idea of what each part does.