Final answer:
The biggest improvements in motor learning occur in the initial cognitive phase, where individuals grasp the basics of a new skill and rapidly develop from awkward to more coordinated movements. Children's motor development follows significant milestones, with gross and fine motor skills advancing noticeably by age three and beyond.
Step-by-step explanation:
The stage of motor learning where you will see the biggest improvements is typically during the initial or cognitive phase of the skill acquisition. During this phase, learners make rapid gains as they understand the fundamentals of the new skill. These improvements are seen as they progress from awkward and unfamiliar movements to more coordinated actions. The subsequent phases involve further refinement and automation of skills, but the improvements are often less dramatic compared to the initial phase.
Motor development in children, which includes the acquisition of gross motor skills and fine motor skills, is marked by significant milestones. For instance, by the age of three, children typically have the gross motor coordination to climb stairs using one foot per step, and possess the fine motor skills necessary to handle small objects and complete simple puzzles.
As children grow, they continue to develop and refine their motor abilities, progressing through various stages, such as from crawling to walking, and later engaging in more complex activities like riding a bicycle or participating in sports.