If you've never created a circuit before then this is great project to get started. All you need to make a basic circuit is some common materials and components. A circuit is a closed path through which an electric current can flow. A circuit can be closed or open. If the circuit is closed all of the components are connected and the electrical current can flow. If the circuit is open then the connection is broken and the electrical current cannot flow. Circuits are used to send energy to turn things on like the motor in a drill or a bulb in a flashlight. A lot of things you use everyday contain circuits and circuit boards. A circuit board contains lots of little circuits that each have their own individual function. One circuit might turn on a motor while another circuit might make a buzzer beep. You can make a simple circuit out of just a light bulb, a power source, and some wires. To make this circuit you’ll need some cardboard, some paper clips, some paper fasteners, a battery, some tape, and a light. It’s also useful to have a pair of needlenose pliers and a utility knife. Circuits typically use wires and circuit traces to send electricity and signals along the circuit. In place of wires she uses paper clips and paper fasteners. If you're going to do the same thing, it’s important to make sure that these items are metal and don’t have any coating. They need to be conductive so that electricity flows through them wherever they touch. For this project, a battery is used as the power source. Batteries have a positive and a negative terminal. Some components only work in one direction so it’s important to note which orientation your battery is being hooked up. This battery supplies 1.5 volts of power. When choosing a light, you want to make sure you use one that is rated for low voltage. If the light is rated for 2 to 3 volts it should still work with one battery. First, Karen tapes down her battery. She adds a paper clip to either side to act as the wir