1)https://meet-b.birzeit.edu/playback/presentation/2.3/3897c746e3cbc180f71ed5093263a43308631297-1609920347360?meetingId=3897c746e3cbc180f71ed5093263a43308631297-1609920347360


2)https://meet-b.birzeit.edu/playback/presentation/2.3/f398793cf5cfc22d2dc4708bb617fd4e2ef1e975-1610525129875?meetingId=f398793cf5cfc22d2dc4708bb617fd4e2ef1e975-1610525129875


3)https://meet-b.birzeit.edu/playback/presentation/2.3/2f654c980f326efe28f174d681228a7230c9249c-1610956937530?meetingId=2f654c980f326efe28f174d681228a7230c9249c-1610956937530


4)https://meet-b.birzeit.edu/playback/presentation/2.3/a3cd628206a18efaaf338e54c2440ba07911e862-1611130018519?meetingId=a3cd628206a18efaaf338e54c2440ba07911e862-1611130018519