The aim of this case study was to explore the feasibility of the Quick Response (QR) codes and mobile devices in the context of Finnish basic education. The interest was especially to explore how mobile devices and QR codes can enhance and blend teaching and learning. The data were collected with a teacher interview and pupil surveys. The learning outcomes were measured with the test results after the experiment and with the pupil's self-evaluation. From a learner's point of view, the QR activity was motivating and brought much-wanted variation to the traditional school day. The QR problems encouraged the pupils to persevere with the problems, an effect which led to good learning outcomes. [For the complete proceedings, see ED557171.]