As children grow from toddlers to preschoolers, they become capable of even more exploration, discovery, and experimentation. In the process, they often experience more confusion and frustration. At times, their feelings can become very intense. As children explore their ever-expanding world, they need limits and consistent, loving adult supervision. Direct your comments to your child's behavior, not to who they are as people. Studies reveal that the way in which adults provide discipline - which really means to teach - is crucial to their children's later development.