Inspired by the Tangram puzzle, originated in Imperial China during the Tang Dynasty in the 618 b.C., the game reached Europe during the 19th century by trading ships. It was popular during the WWI and has become the most common dissection puzzle in the world. In China Tangram patterns are called “Chin-Chiao Pan” meaning intriguing seven pieces puzzle. It’s possible to have more than 6500 different figures mixing the 7 pieces. A technique to teach math that is still applied in classrooms today. The same intuition led Roberto Molteni and Metalway to create a product to improve the sound management in public and private sites.