Google meet and some important extensions

1) Extension to give the students the possibility to raise hand. 2) Extension to get a list of attendance of students and the number of minutes which each student assist to your meeting. 3) Extension to divide your class into separate groups and working a certain activity in groups. 4) How to open a white board on your meeting . 5) How a student can pass and solve on the virtual white board and all the class watch his work.