There are several different types of assessments that can be added to videos to make sure learners are watching the entire video and are engaged, learning the desired content from the video, and interacting with others.
A multiple choice quiz can be added after a key concept in a video, as a pre-test and post-test, or at the end of the video to assess what a student has learned from the video. Multiple choice questions allow the creator to choose a correct answer so the viewer will get immediate feedback about their understanding of the material. Creators can customize the feedback given for correct and incorrect answers.
These can also be used in the same way as multiple choice questions and the creator can make a correct answer with feedback. These can be a little trickier than multiple choice in that the viewer will need to input the answer exactly as the creator has in order to receive correct feedback. The advantage over multiple choice is that the possibility of the viewer guessing the answer from a list of answers is taken away.
Open ended questions can be used for opinion questions, comments, checks for learning progress, etc. Viewers will not get immediate feedback for their answers, but creators can collect answers and use them to evaluate understanding, engagement, and thought processes.
When a discussion is added to a video, viewers can add comments as they watch the video and can see others comments as they are added. Creators can have viewers watch the video together and have a discussion in real time, or viewers can watch on their own time and add to the discussion while they watch. Creators can use discussions to evaluate class learning and understanding.
Polls can be added to a video to gather opinions, survey viewers, or assess engagement. Feedback polls can be used so that viewers can evaluate the video and how it impacted their learning. Creators can also use polls to have viewers assess their own learning with a survey so viewers can let the creator know how they feel about what they have learned.