Breakout Rooms is one of the most popular features of Zoom. A similar feature is now available in Microsoft Teams. Just like in Zoom you can assign your students to a specific breakout room or have them randomly assigned to a room. You can breakout and regroup as many times as you like during your meetings. 

A couple of good features of Breakout Rooms in Teams that you should note include the ability for students to use a whiteboard and the ability for students to ask you clarifying questions without disturbing others. During a breakout your students can jump out of the breakout room to ask you a question and you can answer it without having to bring the whole class out of their breakout rooms. 

Mike Tholfsen has a great video demonstration of how to use Breakout Rooms in Microsoft Teams. You can watch that demonstration on his YouTube channel or as embedded below.