If you've ever been on a team, you know there are good times and bad, highs and lows, ups and downs. But you might not have known exactly what they mean or why they happen. Group researcher Bruce Tuckman, defines these different stages of group development as Forming, Storming, Norming, and Performing. Being able to recognize your team’s current stage will allow you to understand what is going on and know how to take them to the next stage. Here’s a breakdown of each stage and what to expect.