1)https://meet-b.birzeit.edu/playback/presentation/2.3/f2438547fd0d0fb9b138aa6f689ec481725d6b66-1602486004626?meetingId=f2438547fd0d0fb9b138aa6f689ec481725d6b66-1602486004626

2)https://meet-b.birzeit.edu/playback/presentation/2.3/cb28a65bed10694a8e3c796a2e994b1eeb4f294f-1602658808300?meetingId=cb28a65bed10694a8e3c796a2e994b1eeb4f294f-1602658808300

3)https://meet-b.birzeit.edu/playback/presentation/2.3/bcdfb670b461444b19dd844d5dcb227ff6f87c89-1603091482841?meetingId=bcdfb670b461444b19dd844d5dcb227ff6f87c89-1603091482841