Online tutorials are an important part of blended and online courses. This session describes a mixed-methods study investigating the effectiveness of three types of online activities in achieving student participation and engaging students in active learning. These activities include answering mathematical questions by polling; on-screen activities such as drawing and ‘drag and drop’; and using the text chat and microphone. Mathematics students across all undergraduate levels showed high levels of participation in all types of activity, and generally perceived the activities as enjoyable and useful. However, this session also includes a discussion of challenges we still need to overcome.