Today we finshed up the circuit videos. We learned about how circuits work. For instance, they must be closed, or create a full, unbroken circuit. If it is not a continuous loop, it wont work. Sometimes you can use switches to control that, which have metal that slides in and out of connection. We also learned how RGB LEDs work. We had some problems making ours work, and that helped us understand it more. Lastly, we learned about resistors. I never would have thought that a simple battery could break a light, but it can. Resisters are used to basically lower the violence of the electricity so the light can handle it.