With the AR Circuits app students can build and test realistic circuits using augmented reality technology. The app allows you to build circuits without the expense, safety concerns, and inconveniences associated with physical electric components. The circuits are designed by arranging printed paper component cards. The circuits can then be tested and interacted with using the AR Circuits app and the camera on your mobile device. The components currently available include one battery, two switches, four bulbs, one resistor, one component for testing various conductors and insulators, and nine wires. These components allow you to build series, parallel, and combination circuits. Voltages in each circuit can be measured using the voltmeter feature. Additionally, the resistances of the bulbs and resistors are customizable, and the battery has 4 voltage options.