In a classroom setting, a person demonstrates a handmade electronic device. On a dark gray desk, there are several objects laid out on a light cream-colored surface. These include a laptop with a "Numberblocks" sticker on the lid, an Arduino board connected to a breadboard with numerous wires, and a small ultrasonic sensor. A servo motor is connected to the Arduino, which operates a white, origami-style paper model. The person's hand hovers over the ultrasonic sensor, triggering the motor and causing the paper model to move. Beside the model are additional architectural scale model components made of white and navy blue plastic.