Foto: "<a href="https://ccnull.de/foto/hand-holds-smartphone-near-chalkboard-with-text-clouds-online-education-motivation-skill-career-goal-knowledge-learning-training-goal/1047571" target="_blank">Hand holds smartphone near chalkboard with text clouds - online education, motivation, skill, career, goal, knowledge, learning, training, goal,</a>" von <a href="https://ccnull.de/fotograf/marco-verch" target="_blank">Marco Verch</a> via <a href="https://ccnull.de" target="_blank">ccnull.de</a> - <a href="https://www.flickr.com/photos/30478819@N08/51011340625/" target="_blank">Bildquelle</a>, <a href="https://creativecommons.org/licenses/by/2.0/de/" target="_blank">CC-BY 2.0</a>