Before showing , I distribute one sheet per person and put 5 minutes on a timer. In groups of 3-4, students put their brains together in an attempt to answer the questionswatching the video. I then have one person from each group bring me their paper to take a picture. Once I have a picture of every group's paper, I start the video. While students are watching, they are ready to find out if their group answered the questions correctly. I can quickly flip through the pictures to assess prior knowledge. At the end of the video, I reveal the group with the most correct answers and they win a small prize. Students are more engaged and more likely to get correct answers when they have read and talked about the questions prior to viewing.