solutions Hand uses a needle to burst a balloon with Skyworks logo 5 Jahren ago Hand uses a needle to burst a balloon with Skyworks logoDas Bild Hand uses a needle to burst a balloon… DHL logo under magnifying glass 6 Jahren ago DHL logo under magnifying glassDas Bild DHL logo under magnifying glass von Marco Verch kann unter Creative Commons Lizenz genutzt… Crossing out problems and writing solutions on a blackboard 6 Jahren ago Crossing out problems and writing solutions on a blackboardDas Bild Crossing out problems and writing solutions on a blackboard von…