Setting up pair work activities in a face to face class is straightforward . However, when teaching online using zoom, you need to tweak the setup method. One adaptation you'll need to make is to use breakout rooms (virtual rooms which allow for groups of 2 or more students to have discussions). Once students are in these rooms, other groups cannot hear what is happening in their room. The teacher has to enter each room to provide support (just like a teacher would walk around the class to listen to what is happening in each group). After pairwork activities, the teacher can click a button to put everyone in the main room to share their ideas.