Mason Bird has coached youth soccer for three years and believes it is important to teach defensive strategy and teamwork to young players. Coaches should ensure players understand why protecting the goal is their primary objective through drills clearing balls from the goal and intercepting passes. Children can learn the concepts of pressure and cover, where one player weakens an opponent's position for another to steal the ball. Performing tackling, interception, and covering drills helps develop these skills and teaches the importance of dividing the field and shielding the ball as a team on defense.