Blubbr is a cool web tool that allows users to create quizzes around YouTube videos. These are basically interactive video quizzes ( called Trivs ) that you can create for your students and which they can answer while they watch the selected video clip. The quizzes are also feedback supported meaning students will get feedback as they answer each question.
Using Blubbr you can either create your own quizzes around YouTube videos you find using the search functionality or you can browse the categories provided by Blubbr and which have a wide range of already made video quizzes.