6-7 years old child invented a robotic arm with cardboard and syringe. Robotic is his homework. He is a successful student in elementary school. Publicado 23/03/2020 às 704 × 496 em Em tempos de quarentena 6-7 years old child invented a robotic arm with cardboard and syringe. Robotic is his homework. He is a successful student in elementary school.