Knock & Learn


For kids who would rather “knock” than type, designer Khalil Klouche’s “Knock Knock,” a simple-looking wooden box, gridded with arithmetic symbols on top serves as a new kind of calculator. Inside, using an Arduino board, contact microphones and  solenoids, the box responds when knocked in the appropriate quadrant. To add or subtract 3 from a number, just tap the symbol 3 times and the box responds with the correct answer. Klouche designed the learning toy for the exhibition “Touch!” at MUDAC (Museum of Design and Contemporary Art) in Lausanne in 2012.