To ensure student activity in webinars we have defined 10 learning tasks focusing on production and communication e.g. collaborative writing, discussion and polling, and investigated how the technology supports the learning activities. The three project partners in the VisPed-project use different video-conferencing systems, and we analyzed how it is possible to implement different learning activities in the video-conferencing tools, alternatively using external tools in combination with video-conferencing tools. The webinar technologies investigated (Microsoft Lync, MeetCon and Adobe Connect) mainly have features to create live polls, share screens and resources, chat and handle user roles (presenter, guests). Learning activities based on e.g. collaborative text production, collaborative work with spreadsheets, presentations and evaluations demand the use of external applications. [For complete proceedings, see ED562096.]