We have been testing different strategies of online teaching this semester. We have found some success factors. 1. The students need some basic information on how each lesson is planned and some basic training on how the digital tools we are using work. 2. Short introductions of a topic from the professor/teacher. 30 minutes is a lot for many students. 3. Let the students work in groups with challenges that are complex and require collaboration, exploration and testing. 4. Assignments that are according to the students interests, needs and the situation they are in, generate more enthusiasm, motivation and hard work. Relevance is a key factor. 5. Development work generates positive work energy among the students ("How can you improve this?"). 6. The student groups are more active if they are visited by the professor/teacher during their collaboration ("How interesting." - "Can you explain this to me ..."). 7. The students like to present their work. Please share success factor from your online teaching. Many colleagues are struggling to make this work. What are the success factors of your online teaching during this COVID-19 semester? Please share so we all can get better.