This video demonstrates how to mark online worksheets and give feedback, using the example of worksheets on the topic of ‘Distance-Time Graph’ in Primary 6 Mathematics. In the video, the teacher shows how to use Microsoft Teams, Pear Deck and OneNote to carry out real-time synchronised classwork in an online class. These online platforms allow the teacher to observe how each student is doing the classwork in real time and then to mark the online assignments and provide immediate feedback accordingly. This video is designed for Primary Mathematics teachers.