Flipgrid
Flipgrid is a social network for students to record screencasts, videos and share their voice with teachers and peers. You can get it for free in the following link: https://info.flipgrid.com/
Once you create an account, you can start recording videos and post them to the room your teacher has created. Your screen has the following options:
(image credit: http://ditchthattextbook.com/2019/08/06/shorts-season-an-introduction-to-the-new-flipgrid-camera/)
Students can post their introductions in the Students' corner:
https://twinspace.etwinning.net/94122/pages/page/694990
More information for the teacher: http://ditchthattextbook.com/2019/08/06/shorts-season-an-introduction-to-the-new-flipgrid-camera/