Teamwork is people working together toward a shared goal, combining their different strengths and abilities to accomplish something they couldn't do alone. When a soccer team practices passing and positioning, when a group of students divides up research for a class presentation, or when a family works together to prepare a big dinner, that's teamwork in action.

Good teamwork requires communication, cooperation, and often compromise. Each person needs to understand their role and trust others to do theirs. In a relay race, teamwork means running your fastest, making a clean handoff, and cheering for your teammates. Building a treehouse requires teamwork: one person might be great at measuring and cutting wood, another at hammering, and another at holding pieces steady.

The opposite of teamwork is working alone or, worse, working against each other. When teammates blame each other after a loss instead of figuring out how to improve together, teamwork breaks down. When group members each try to be the star instead of supporting the whole effort, the team suffers.

Scientists, engineers, doctors, artists, and athletes all rely on teamwork. The Wright brothers invented the airplane through teamwork. The Apollo missions that landed humans on the moon required thousands of people working in careful coordination. Even writers and painters, who may work alone, depend on editors, gallery owners, and others to bring their work to audiences.