Coordination is your ability to take separate patterns of movement and “coordinate” them into one mega-movement. The more accurate you coordinate your actions accurately, the better you accomplish your task your trying to perform.
Coordination building can be any activity that requires you to land a target with precision based on a specific movement. Whether if it's hopping to specific spots, hitting in object with anticipation, etc.
Coordination allows you to reduce the likelihood of accidents. This skill goes hand in hand with balancing because it requires your body to coordinate with the center of gravity in order to prevent falling. If you did fall down, the skill of coordination will help you catch yourself and increase the chances of landing safely. Another benefit is getting better accuracy when landing projectiles such as throwing darts, passing a soccer ball to a teammate, or hitting the baseball with a bat accurately.