Teachers would usually do group activities to implement teamwork during class. Associating with other people in my group not only makes me closer to them, but it also helps me understand much more when sharing each others' ideas. Another one would be a Four Corner debate I would do in IB English because it makes the class more intense with the vigorous debates and others opinions that are very interesting to hear and talk against about. It's all informative for the next essay prompt so it's helping each other with their own opinions. Teachers would also introduce projects to seek out group teamwork as well and in speculate how they will figure an idea out.
I would choose the group activities because I've been doing them a whole lot now and it's really helpful to have some guidance. Its successful because it's a really acceptable tool of distributing learning attributes for better understanding of each other's work. Teamwork is worth the dream work so not only do we have to be dependent on ourselves, others are there too!