The use of computers in the teaching and learning process is investigated by many researches and, nowadays, due the available diversity of computing devices, tablets are become popular in classroom too. So what are the advantages and disadvantages to use tablets in classroom? How can we shape the teaching and learning activities to get the best of this technology? To try to answers these questions we offered a course in a classroom equipped with tablets and made some observations that are relevant in this context. We offered one pilot course about Human-Computer Interaction employing the Tablet PCs in classroom. This article presents this experience and some insights perceived after reflection on the action. We conclude the needs to change the teaching and learning activities when adopt tablets in classroom to get the advantages of this device and minimize the disadvantages: tablets can motivate students but can be a distract tool too. [For the complete proceedings see ED557181.]