Seamless Learning shall initiate human learning processes that exceeds lesson and classroom limits. At the same time this approach fosters a self-regulated learning, by means of inspirational, open education settings. Advanced learning materials are easily accessible via mobile digital devices connected to the Internet. In this study it was explored whether and to what extent an open learning approach can be initiated by support of videos and incentives. The study took place in a real-world setting during a conventional mathematics class in an Austrian secondary school with N = 85 children of average age of 10, 6 years. For the investigation a traditional face-to-face maths-teaching environment was completely replaced by an open learning environment. In our study, the elementary learners were able to select their own learning pace and preferences via example videos. In addition to the use of an open education approach and videos, their learning was also incentivised via a reward system of "stars." A pre-test-post-test-control-group study showed that the learning performance significantly increased. The reason was due to the combination of a novel teaching and learning setting and coupled incentives to foster the learning process.